20512246550

素因数分解:

$2^1\times 5^2\times {\mathrm{101}}^1\times {\mathrm{643}}^1\times {\mathrm{6317}}^1$

素因数の和:7073

約数の個数: 48

約数和(自身を含む): 38596560912

約数和(自身を除く): 18084314362

約数列:

[1, 2, 5, 10, 25, 50, 101, 202, 505, 643, 1010, 1286, 2525, 3215, 5050, 6317, 6430, 12634, 16075, 31585, 32150, 63170, 64943, 129886, 157925, 315850, 324715, 638017, 649430, 1276034, 1623575, 3190085, 3247150, 4061831, 6380170, 8123662, 15950425, 20309155, 31900850, 40618310, 101545775, 203091550, 410244931, 820489862, 2051224655, 4102449310, 10256123275, 20512246550]

約数ペア:

[(1, 20512246550), (2, 10256123275), (5, 4102449310), (10, 2051224655), (25, 820489862), (50, 410244931), (101, 203091550), (202, 101545775), (505, 40618310), (643, 31900850), (1010, 20309155), (1286, 15950425), (2525, 8123662), (3215, 6380170), (5050, 4061831), (6317, 3247150), (6430, 3190085), (12634, 1623575), (16075, 1276034), (31585, 649430), (32150, 638017), (63170, 324715), (64943, 315850), (129886, 157925)]