281131920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:290

約数の個数: 240

約数和(自身を含む): 991244592

約数和(自身を除く): 710112672

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 37, 40, 45, 48, 60, 61, 72, 74, 80, 90, 111, 120, 122, 144, 148, 173, 180, 183, 185, 222, 240, 244, 296, 305, 333, 346, 360, 366, 370, 444, 488, 519, 549, 555, 592, 610, 666, 692, 720, 732, 740, 865, 888, 915, 976, 1038, 1098, 1110, 1220, 1332, 1384, 1464, 1480, 1557, 1665, 1730, 1776, 1830, 2076, 2196, 2220, 2257, 2440, 2595, 2664, 2745, 2768, 2928, 2960, 3114, 3330, 3460, 3660, 4152, 4392, 4440, 4514, 4880, 5190, 5328, 5490, 6228, 6401, 6660, 6771, 6920, 7320, 7785, 8304, 8784, 8880, 9028, 10380, 10553, 10980, 11285, 12456, 12802, 13320, 13542, 13840, 14640, 15570, 18056, 19203, 20313, 20760, 21106, 21960, 22570, 24912, 25604, 26640, 27084, 31140, 31659, 32005, 33855, 36112, 38406, 40626, 41520, 42212, 43920, 45140, 51208, 52765, 54168, 57609, 62280, 63318, 64010, 67710, 76812, 81252, 84424, 90280, 94977, 96015, 101565, 102416, 105530, 108336, 115218, 124560, 126636, 128020, 135420, 153624, 158295, 162504, 168848, 180560, 189954, 192030, 203130, 211060, 230436, 253272, 256040, 270840, 288045, 307248, 316590, 325008, 379908, 384060, 390461, 406260, 422120, 460872, 474885, 506544, 512080, 541680, 576090, 633180, 759816, 768120, 780922, 812520, 844240, 921744, 949770, 1152180, 1171383, 1266360, 1519632, 1536240, 1561844, 1625040, 1899540, 1952305, 2304360, 2342766, 2532720, 3123688, 3514149, 3799080, 3904610, 4608720, 4685532, 5856915, 6247376, 7028298, 7598160, 7809220, 9371064, 11713830, 14056596, 15618440, 17570745, 18742128, 23427660, 28113192, 31236880, 35141490, 46855320, 56226384, 70282980, 93710640, 140565960, 281131920]

約数ペア:

[(1, 281131920), (2, 140565960), (3, 93710640), (4, 70282980), (5, 56226384), (6, 46855320), (8, 35141490), (9, 31236880), (10, 28113192), (12, 23427660), (15, 18742128), (16, 17570745), (18, 15618440), (20, 14056596), (24, 11713830), (30, 9371064), (36, 7809220), (37, 7598160), (40, 7028298), (45, 6247376), (48, 5856915), (60, 4685532), (61, 4608720), (72, 3904610), (74, 3799080), (80, 3514149), (90, 3123688), (111, 2532720), (120, 2342766), (122, 2304360), (144, 1952305), (148, 1899540), (173, 1625040), (180, 1561844), (183, 1536240), (185, 1519632), (222, 1266360), (240, 1171383), (244, 1152180), (296, 949770), (305, 921744), (333, 844240), (346, 812520), (360, 780922), (366, 768120), (370, 759816), (444, 633180), (488, 576090), (519, 541680), (549, 512080), (555, 506544), (592, 474885), (610, 460872), (666, 422120), (692, 406260), (720, 390461), (732, 384060), (740, 379908), (865, 325008), (888, 316590), (915, 307248), (976, 288045), (1038, 270840), (1098, 256040), (1110, 253272), (1220, 230436), (1332, 211060), (1384, 203130), (1464, 192030), (1480, 189954), (1557, 180560), (1665, 168848), (1730, 162504), (1776, 158295), (1830, 153624), (2076, 135420), (2196, 128020), (2220, 126636), (2257, 124560), (2440, 115218), (2595, 108336), (2664, 105530), (2745, 102416), (2768, 101565), (2928, 96015), (2960, 94977), (3114, 90280), (3330, 84424), (3460, 81252), (3660, 76812), (4152, 67710), (4392, 64010), (4440, 63318), (4514, 62280), (4880, 57609), (5190, 54168), (5328, 52765), (5490, 51208), (6228, 45140), (6401, 43920), (6660, 42212), (6771, 41520), (6920, 40626), (7320, 38406), (7785, 36112), (8304, 33855), (8784, 32005), (8880, 31659), (9028, 31140), (10380, 27084), (10553, 26640), (10980, 25604), (11285, 24912), (12456, 22570), (12802, 21960), (13320, 21106), (13542, 20760), (13840, 20313), (14640, 19203), (15570, 18056)]