90644780

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{191}}^1\times {\mathrm{389}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 194987520

約数和(自身を除く): 104342740

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 191, 244, 305, 382, 389, 610, 764, 778, 955, 1220, 1556, 1910, 1945, 3820, 3890, 7780, 11651, 23302, 23729, 46604, 47458, 58255, 74299, 94916, 116510, 118645, 148598, 233020, 237290, 297196, 371495, 474580, 742990, 1485980, 4532239, 9064478, 18128956, 22661195, 45322390, 90644780]

約数ペア:

[(1, 90644780), (2, 45322390), (4, 22661195), (5, 18128956), (10, 9064478), (20, 4532239), (61, 1485980), (122, 742990), (191, 474580), (244, 371495), (305, 297196), (382, 237290), (389, 233020), (610, 148598), (764, 118645), (778, 116510), (955, 94916), (1220, 74299), (1556, 58255), (1910, 47458), (1945, 46604), (3820, 23729), (3890, 23302), (7780, 11651)]