31242640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2731}}^1$

素因数の和:2768

約数の個数: 80

約数和(自身を含む): 85369536

約数和(自身を除く): 54126896

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 176, 208, 220, 260, 286, 440, 520, 572, 715, 880, 1040, 1144, 1430, 2288, 2731, 2860, 5462, 5720, 10924, 11440, 13655, 21848, 27310, 30041, 35503, 43696, 54620, 60082, 71006, 109240, 120164, 142012, 150205, 177515, 218480, 240328, 284024, 300410, 355030, 390533, 480656, 568048, 600820, 710060, 781066, 1201640, 1420120, 1562132, 1952665, 2403280, 2840240, 3124264, 3905330, 6248528, 7810660, 15621320, 31242640]

約数ペア:

[(1, 31242640), (2, 15621320), (4, 7810660), (5, 6248528), (8, 3905330), (10, 3124264), (11, 2840240), (13, 2403280), (16, 1952665), (20, 1562132), (22, 1420120), (26, 1201640), (40, 781066), (44, 710060), (52, 600820), (55, 568048), (65, 480656), (80, 390533), (88, 355030), (104, 300410), (110, 284024), (130, 240328), (143, 218480), (176, 177515), (208, 150205), (220, 142012), (260, 120164), (286, 109240), (440, 71006), (520, 60082), (572, 54620), (715, 43696), (880, 35503), (1040, 30041), (1144, 27310), (1430, 21848), (2288, 13655), (2731, 11440), (2860, 10924), (5462, 5720)]