1980426260

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{630709}}^1$

素因数の和:630875

約数の個数: 24

約数和(自身を含む): 4185391560

約数和(自身を除く): 2204965300

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 628, 785, 1570, 3140, 630709, 1261418, 2522836, 3153545, 6307090, 12614180, 99021313, 198042626, 396085252, 495106565, 990213130, 1980426260]

約数ペア:

[(1, 1980426260), (2, 990213130), (4, 495106565), (5, 396085252), (10, 198042626), (20, 99021313), (157, 12614180), (314, 6307090), (628, 3153545), (785, 2522836), (1570, 1261418), (3140, 630709)]