639312.0000000

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9551}}^1$

素因数の和:9577

約数の個数: 40

約数和(自身を含む): 24873408

約数和(自身を除く): 14940368

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 9551, 19102, 38204, 47755, 76408, 95510, 124163, 152816, 191020, 248326, 382040, 496652, 620815, 764080, 993304, 1241630, 1986608, 2483260, 4966520, 9933040]

約数ペア:

[(1, 9933040), (2, 4966520), (4, 2483260), (5, 1986608), (8, 1241630), (10, 993304), (13, 764080), (16, 620815), (20, 496652), (26, 382040), (40, 248326), (52, 191020), (65, 152816), (80, 124163), (104, 95510), (130, 76408), (208, 47755), (260, 38204), (520, 19102), (1040, 9551)]