71890520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{138251}}^1$

素因数の和:138275

約数の個数: 32

約数和(自身を含む): 174197520

約数和(自身を除く): 102307000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 138251, 276502, 553004, 691255, 1106008, 1382510, 1797263, 2765020, 3594526, 5530040, 7189052, 8986315, 14378104, 17972630, 35945260, 71890520]

約数ペア:

[(1, 71890520), (2, 35945260), (4, 17972630), (5, 14378104), (8, 8986315), (10, 7189052), (13, 5530040), (20, 3594526), (26, 2765020), (40, 1797263), (52, 1382510), (65, 1106008), (104, 691255), (130, 553004), (260, 276502), (520, 138251)]