81665556

素因数分解:

$2^2\times 3^1\times 7^3\times {\mathrm{19841}}^1$

素因数の和:19869

約数の個数: 48

約数和(自身を含む): 222230400

約数和(自身を除く): 140564844

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 196, 294, 343, 588, 686, 1029, 1372, 2058, 4116, 19841, 39682, 59523, 79364, 119046, 138887, 238092, 277774, 416661, 555548, 833322, 972209, 1666644, 1944418, 2916627, 3888836, 5833254, 6805463, 11666508, 13610926, 20416389, 27221852, 40832778, 81665556]

約数ペア:

[(1, 81665556), (2, 40832778), (3, 27221852), (4, 20416389), (6, 13610926), (7, 11666508), (12, 6805463), (14, 5833254), (21, 3888836), (28, 2916627), (42, 1944418), (49, 1666644), (84, 972209), (98, 833322), (147, 555548), (196, 416661), (294, 277774), (343, 238092), (588, 138887), (686, 119046), (1029, 79364), (1372, 59523), (2058, 39682), (4116, 19841)]