12757820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{239}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 28667520

約数和(自身を除く): 15909700

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 157, 170, 239, 314, 340, 478, 628, 785, 956, 1195, 1570, 2390, 2669, 3140, 4063, 4780, 5338, 8126, 10676, 13345, 16252, 20315, 26690, 37523, 40630, 53380, 75046, 81260, 150092, 187615, 375230, 637891, 750460, 1275782, 2551564, 3189455, 6378910, 12757820]

約数ペア:

[(1, 12757820), (2, 6378910), (4, 3189455), (5, 2551564), (10, 1275782), (17, 750460), (20, 637891), (34, 375230), (68, 187615), (85, 150092), (157, 81260), (170, 75046), (239, 53380), (314, 40630), (340, 37523), (478, 26690), (628, 20315), (785, 16252), (956, 13345), (1195, 10676), (1570, 8126), (2390, 5338), (2669, 4780), (3140, 4063)]