20739240

素因数分解:

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

素因数の和:233

約数の個数: 160

約数和(自身を含む): 72004680

約数和(自身を除く): 51265440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 37, 40, 45, 54, 60, 72, 74, 81, 90, 108, 111, 120, 135, 148, 162, 173, 180, 185, 216, 222, 270, 296, 324, 333, 346, 360, 370, 405, 444, 519, 540, 555, 648, 666, 692, 740, 810, 865, 888, 999, 1038, 1080, 1110, 1332, 1384, 1480, 1557, 1620, 1665, 1730, 1998, 2076, 2220, 2595, 2664, 2997, 3114, 3240, 3330, 3460, 3996, 4152, 4440, 4671, 4995, 5190, 5994, 6228, 6401, 6660, 6920, 7785, 7992, 9342, 9990, 10380, 11988, 12456, 12802, 13320, 14013, 14985, 15570, 18684, 19203, 19980, 20760, 23355, 23976, 25604, 28026, 29970, 31140, 32005, 37368, 38406, 39960, 46710, 51208, 56052, 57609, 59940, 62280, 64010, 70065, 76812, 93420, 96015, 112104, 115218, 119880, 128020, 140130, 153624, 172827, 186840, 192030, 230436, 256040, 280260, 288045, 345654, 384060, 460872, 518481, 560520, 576090, 691308, 768120, 864135, 1036962, 1152180, 1382616, 1728270, 2073924, 2304360, 2592405, 3456540, 4147848, 5184810, 6913080, 10369620, 20739240]

約数ペア:

[(1, 20739240), (2, 10369620), (3, 6913080), (4, 5184810), (5, 4147848), (6, 3456540), (8, 2592405), (9, 2304360), (10, 2073924), (12, 1728270), (15, 1382616), (18, 1152180), (20, 1036962), (24, 864135), (27, 768120), (30, 691308), (36, 576090), (37, 560520), (40, 518481), (45, 460872), (54, 384060), (60, 345654), (72, 288045), (74, 280260), (81, 256040), (90, 230436), (108, 192030), (111, 186840), (120, 172827), (135, 153624), (148, 140130), (162, 128020), (173, 119880), (180, 115218), (185, 112104), (216, 96015), (222, 93420), (270, 76812), (296, 70065), (324, 64010), (333, 62280), (346, 59940), (360, 57609), (370, 56052), (405, 51208), (444, 46710), (519, 39960), (540, 38406), (555, 37368), (648, 32005), (666, 31140), (692, 29970), (740, 28026), (810, 25604), (865, 23976), (888, 23355), (999, 20760), (1038, 19980), (1080, 19203), (1110, 18684), (1332, 15570), (1384, 14985), (1480, 14013), (1557, 13320), (1620, 12802), (1665, 12456), (1730, 11988), (1998, 10380), (2076, 9990), (2220, 9342), (2595, 7992), (2664, 7785), (2997, 6920), (3114, 6660), (3240, 6401), (3330, 6228), (3460, 5994), (3996, 5190), (4152, 4995), (4440, 4671)]