87777140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{4483}}^1$

素因数の和:4592

約数の個数: 48

約数和(自身を含む): 203394240

約数和(自身を除く): 115617100

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1780, 1958, 3916, 4483, 4895, 8966, 9790, 17932, 19580, 22415, 44830, 49313, 89660, 98626, 197252, 246565, 398987, 493130, 797974, 986260, 1595948, 1994935, 3989870, 4388857, 7979740, 8777714, 17555428, 21944285, 43888570, 87777140]

約数ペア:

[(1, 87777140), (2, 43888570), (4, 21944285), (5, 17555428), (10, 8777714), (11, 7979740), (20, 4388857), (22, 3989870), (44, 1994935), (55, 1595948), (89, 986260), (110, 797974), (178, 493130), (220, 398987), (356, 246565), (445, 197252), (890, 98626), (979, 89660), (1780, 49313), (1958, 44830), (3916, 22415), (4483, 19580), (4895, 17932), (8966, 9790)]