20201498980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4723}}^1\times {\mathrm{16451}}^1$

素因数の和:21196

約数の個数: 48

約数和(自身を含む): 45698917824

約数和(自身を除く): 25497418844

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 4723, 9446, 16451, 18892, 23615, 32902, 47230, 61399, 65804, 82255, 94460, 122798, 164510, 213863, 245596, 306995, 329020, 427726, 613990, 855452, 1069315, 1227980, 2138630, 4277260, 77698073, 155396146, 310792292, 388490365, 776980730, 1010074949, 1553961460, 2020149898, 4040299796, 5050374745, 10100749490, 20201498980]

約数ペア:

[(1, 20201498980), (2, 10100749490), (4, 5050374745), (5, 4040299796), (10, 2020149898), (13, 1553961460), (20, 1010074949), (26, 776980730), (52, 388490365), (65, 310792292), (130, 155396146), (260, 77698073), (4723, 4277260), (9446, 2138630), (16451, 1227980), (18892, 1069315), (23615, 855452), (32902, 613990), (47230, 427726), (61399, 329020), (65804, 306995), (82255, 245596), (94460, 213863), (122798, 164510)]