220155980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{7639}}^1$

素因数の和:7790

約数の個数: 48

約数和(自身を含む): 508273920

約数和(自身を除く): 288117940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 131, 220, 262, 524, 655, 1310, 1441, 2620, 2882, 5764, 7205, 7639, 14410, 15278, 28820, 30556, 38195, 76390, 84029, 152780, 168058, 336116, 420145, 840290, 1000709, 1680580, 2001418, 4002836, 5003545, 10007090, 11007799, 20014180, 22015598, 44031196, 55038995, 110077990, 220155980]

約数ペア:

[(1, 220155980), (2, 110077990), (4, 55038995), (5, 44031196), (10, 22015598), (11, 20014180), (20, 11007799), (22, 10007090), (44, 5003545), (55, 4002836), (110, 2001418), (131, 1680580), (220, 1000709), (262, 840290), (524, 420145), (655, 336116), (1310, 168058), (1441, 152780), (2620, 84029), (2882, 76390), (5764, 38195), (7205, 30556), (7639, 28820), (14410, 15278)]