4021820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{181}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 9356256

約数和(自身を除く): 5334436

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 181, 202, 220, 362, 404, 505, 724, 905, 1010, 1111, 1810, 1991, 2020, 2222, 3620, 3982, 4444, 5555, 7964, 9955, 11110, 18281, 19910, 22220, 36562, 39820, 73124, 91405, 182810, 201091, 365620, 402182, 804364, 1005455, 2010910, 4021820]

約数ペア:

[(1, 4021820), (2, 2010910), (4, 1005455), (5, 804364), (10, 402182), (11, 365620), (20, 201091), (22, 182810), (44, 91405), (55, 73124), (101, 39820), (110, 36562), (181, 22220), (202, 19910), (220, 18281), (362, 11110), (404, 9955), (505, 7964), (724, 5555), (905, 4444), (1010, 3982), (1111, 3620), (1810, 2222), (1991, 2020)]