68501680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{65867}}^1$

素因数の和:65893

約数の個数: 40

約数和(自身を含む): 171520272

約数和(自身を除く): 103018592

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 65867, 131734, 263468, 329335, 526936, 658670, 856271, 1053872, 1317340, 1712542, 2634680, 3425084, 4281355, 5269360, 6850168, 8562710, 13700336, 17125420, 34250840, 68501680]

約数ペア:

[(1, 68501680), (2, 34250840), (4, 17125420), (5, 13700336), (8, 8562710), (10, 6850168), (13, 5269360), (16, 4281355), (20, 3425084), (26, 2634680), (40, 1712542), (52, 1317340), (65, 1053872), (80, 856271), (104, 658670), (130, 526936), (208, 329335), (260, 263468), (520, 131734), (1040, 65867)]