20385550

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{827}}^1$

素因数の和:885

約数の個数: 48

約数和(自身を含む): 41582160

約数和(自身を除く): 21196610

約数列:

[1, 2, 5, 10, 17, 25, 29, 34, 50, 58, 85, 145, 170, 290, 425, 493, 725, 827, 850, 986, 1450, 1654, 2465, 4135, 4930, 8270, 12325, 14059, 20675, 23983, 24650, 28118, 41350, 47966, 70295, 119915, 140590, 239830, 351475, 407711, 599575, 702950, 815422, 1199150, 2038555, 4077110, 10192775, 20385550]

約数ペア:

[(1, 20385550), (2, 10192775), (5, 4077110), (10, 2038555), (17, 1199150), (25, 815422), (29, 702950), (34, 599575), (50, 407711), (58, 351475), (85, 239830), (145, 140590), (170, 119915), (290, 70295), (425, 47966), (493, 41350), (725, 28118), (827, 24650), (850, 23983), (986, 20675), (1450, 14059), (1654, 12325), (2465, 8270), (4135, 4930)]