127889840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{122971}}^1$

素因数の和:122997

約数の個数: 40

約数和(自身を含む): 320219088

約数和(自身を除く): 192329248

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 122971, 245942, 491884, 614855, 983768, 1229710, 1598623, 1967536, 2459420, 3197246, 4918840, 6394492, 7993115, 9837680, 12788984, 15986230, 25577968, 31972460, 63944920, 127889840]

約数ペア:

[(1, 127889840), (2, 63944920), (4, 31972460), (5, 25577968), (8, 15986230), (10, 12788984), (13, 9837680), (16, 7993115), (20, 6394492), (26, 4918840), (40, 3197246), (52, 2459420), (65, 1967536), (80, 1598623), (104, 1229710), (130, 983768), (208, 614855), (260, 491884), (520, 245942), (1040, 122971)]