21097340

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5641}}^1$

素因数の和:5678

約数の個数: 48

約数和(自身を含む): 51184224

約数和(自身を除く): 30086884

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 5641, 11282, 22564, 28205, 56410, 62051, 95897, 112820, 124102, 191794, 248204, 310255, 383588, 479485, 620510, 958970, 1054867, 1241020, 1917940, 2109734, 4219468, 5274335, 10548670, 21097340]

約数ペア:

[(1, 21097340), (2, 10548670), (4, 5274335), (5, 4219468), (10, 2109734), (11, 1917940), (17, 1241020), (20, 1054867), (22, 958970), (34, 620510), (44, 479485), (55, 383588), (68, 310255), (85, 248204), (110, 191794), (170, 124102), (187, 112820), (220, 95897), (340, 62051), (374, 56410), (748, 28205), (935, 22564), (1870, 11282), (3740, 5641)]