640654.0000000

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{317}}^1$

素因数の和:440

約数の個数: 32

約数和(自身を含む): 11219040

約数和(自身を除く): 5376730

約数列:

[1, 2, 5, 10, 19, 38, 95, 97, 190, 194, 317, 485, 634, 970, 1585, 1843, 3170, 3686, 6023, 9215, 12046, 18430, 30115, 30749, 60230, 61498, 153745, 307490, 584231, 1168462, 2921155, 5842310]

約数ペア:

[(1, 5842310), (2, 2921155), (5, 1168462), (10, 584231), (19, 307490), (38, 153745), (95, 61498), (97, 60230), (190, 30749), (194, 30115), (317, 18430), (485, 12046), (634, 9215), (970, 6023), (1585, 3686), (1843, 3170)]