81804780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:296

約数の個数: 144

約数和(自身を含む): 259930944

約数和(自身を除く): 178126164

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 60, 71, 74, 90, 111, 142, 148, 173, 180, 185, 213, 222, 284, 333, 346, 355, 370, 426, 444, 519, 555, 639, 666, 692, 710, 740, 852, 865, 1038, 1065, 1110, 1278, 1332, 1420, 1557, 1665, 1730, 2076, 2130, 2220, 2556, 2595, 2627, 3114, 3195, 3330, 3460, 4260, 5190, 5254, 6228, 6390, 6401, 6660, 7785, 7881, 10380, 10508, 12283, 12780, 12802, 13135, 15570, 15762, 19203, 23643, 24566, 25604, 26270, 31140, 31524, 32005, 36849, 38406, 39405, 47286, 49132, 52540, 57609, 61415, 64010, 73698, 76812, 78810, 94572, 96015, 110547, 115218, 118215, 122830, 128020, 147396, 157620, 184245, 192030, 221094, 230436, 236430, 245660, 288045, 368490, 384060, 442188, 454471, 472860, 552735, 576090, 736980, 908942, 1105470, 1152180, 1363413, 1817884, 2210940, 2272355, 2726826, 4090239, 4544710, 5453652, 6817065, 8180478, 9089420, 13634130, 16360956, 20451195, 27268260, 40902390, 81804780]

約数ペア:

[(1, 81804780), (2, 40902390), (3, 27268260), (4, 20451195), (5, 16360956), (6, 13634130), (9, 9089420), (10, 8180478), (12, 6817065), (15, 5453652), (18, 4544710), (20, 4090239), (30, 2726826), (36, 2272355), (37, 2210940), (45, 1817884), (60, 1363413), (71, 1152180), (74, 1105470), (90, 908942), (111, 736980), (142, 576090), (148, 552735), (173, 472860), (180, 454471), (185, 442188), (213, 384060), (222, 368490), (284, 288045), (333, 245660), (346, 236430), (355, 230436), (370, 221094), (426, 192030), (444, 184245), (519, 157620), (555, 147396), (639, 128020), (666, 122830), (692, 118215), (710, 115218), (740, 110547), (852, 96015), (865, 94572), (1038, 78810), (1065, 76812), (1110, 73698), (1278, 64010), (1332, 61415), (1420, 57609), (1557, 52540), (1665, 49132), (1730, 47286), (2076, 39405), (2130, 38406), (2220, 36849), (2556, 32005), (2595, 31524), (2627, 31140), (3114, 26270), (3195, 25604), (3330, 24566), (3460, 23643), (4260, 19203), (5190, 15762), (5254, 15570), (6228, 13135), (6390, 12802), (6401, 12780), (6660, 12283), (7785, 10508), (7881, 10380)]