1557940

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1277}}^1$

素因数の和:1347

約数の個数: 24

約数和(自身を含む): 3327912

約数和(自身を除く): 1769972

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 1277, 2554, 5108, 6385, 12770, 25540, 77897, 155794, 311588, 389485, 778970, 1557940]

約数ペア:

[(1, 1557940), (2, 778970), (4, 389485), (5, 311588), (10, 155794), (20, 77897), (61, 25540), (122, 12770), (244, 6385), (305, 5108), (610, 2554), (1220, 1277)]