87942920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{1291}}^1$

素因数の和:1446

約数の個数: 64

約数和(自身を含む): 214885440

約数和(自身を除く): 126942520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 131, 260, 262, 520, 524, 655, 1048, 1291, 1310, 1703, 2582, 2620, 3406, 5164, 5240, 6455, 6812, 8515, 10328, 12910, 13624, 16783, 17030, 25820, 33566, 34060, 51640, 67132, 68120, 83915, 134264, 167830, 169121, 335660, 338242, 671320, 676484, 845605, 1352968, 1691210, 2198573, 3382420, 4397146, 6764840, 8794292, 10992865, 17588584, 21985730, 43971460, 87942920]

約数ペア:

[(1, 87942920), (2, 43971460), (4, 21985730), (5, 17588584), (8, 10992865), (10, 8794292), (13, 6764840), (20, 4397146), (26, 3382420), (40, 2198573), (52, 1691210), (65, 1352968), (104, 845605), (130, 676484), (131, 671320), (260, 338242), (262, 335660), (520, 169121), (524, 167830), (655, 134264), (1048, 83915), (1291, 68120), (1310, 67132), (1703, 51640), (2582, 34060), (2620, 33566), (3406, 25820), (5164, 17030), (5240, 16783), (6455, 13624), (6812, 12910), (8515, 10328)]