20855290

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1\times {\mathrm{191}}^1$

素因数の和:438

約数の個数: 32

約数和(自身を含む): 38568960

約数和(自身を除く): 17713670

約数列:

[1, 2, 5, 10, 61, 122, 179, 191, 305, 358, 382, 610, 895, 955, 1790, 1910, 10919, 11651, 21838, 23302, 34189, 54595, 58255, 68378, 109190, 116510, 170945, 341890, 2085529, 4171058, 10427645, 20855290]

約数ペア:

[(1, 20855290), (2, 10427645), (5, 4171058), (10, 2085529), (61, 341890), (122, 170945), (179, 116510), (191, 109190), (305, 68378), (358, 58255), (382, 54595), (610, 34189), (895, 23302), (955, 21838), (1790, 11651), (1910, 10919)]