20104315

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{661}}^1$

素因数の和:763

約数の個数: 32

約数和(自身を含む): 30504960

約数和(自身を除く): 10400645

約数列:

[1, 5, 7, 11, 35, 55, 77, 79, 385, 395, 553, 661, 869, 2765, 3305, 4345, 4627, 6083, 7271, 23135, 30415, 36355, 50897, 52219, 254485, 261095, 365533, 574409, 1827665, 2872045, 4020863, 20104315]

約数ペア:

[(1, 20104315), (5, 4020863), (7, 2872045), (11, 1827665), (35, 574409), (55, 365533), (77, 261095), (79, 254485), (385, 52219), (395, 50897), (553, 36355), (661, 30415), (869, 23135), (2765, 7271), (3305, 6083), (4345, 4627)]