18687890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{4957}}^1$

素因数の和:5006

約数の個数: 32

約数和(自身を含む): 37482480

約数和(自身を除く): 18794590

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 130, 145, 290, 377, 754, 1885, 3770, 4957, 9914, 24785, 49570, 64441, 128882, 143753, 287506, 322205, 644410, 718765, 1437530, 1868789, 3737578, 9343945, 18687890]

約数ペア:

[(1, 18687890), (2, 9343945), (5, 3737578), (10, 1868789), (13, 1437530), (26, 718765), (29, 644410), (58, 322205), (65, 287506), (130, 143753), (145, 128882), (290, 64441), (377, 49570), (754, 24785), (1885, 9914), (3770, 4957)]