18737895

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:220

約数の個数: 64

約数和(自身を含む): 35481600

約数和(自身を除く): 16743705

約数列:

[1, 3, 5, 11, 15, 19, 33, 43, 55, 57, 95, 129, 139, 165, 209, 215, 285, 417, 473, 627, 645, 695, 817, 1045, 1419, 1529, 2085, 2365, 2451, 2641, 3135, 4085, 4587, 5977, 7095, 7645, 7923, 8987, 12255, 13205, 17931, 22935, 26961, 29051, 29885, 39615, 44935, 65747, 87153, 89655, 113563, 134805, 145255, 197241, 328735, 340689, 435765, 567815, 986205, 1249193, 1703445, 3747579, 6245965, 18737895]

約数ペア:

[(1, 18737895), (3, 6245965), (5, 3747579), (11, 1703445), (15, 1249193), (19, 986205), (33, 567815), (43, 435765), (55, 340689), (57, 328735), (95, 197241), (129, 145255), (139, 134805), (165, 113563), (209, 89655), (215, 87153), (285, 65747), (417, 44935), (473, 39615), (627, 29885), (645, 29051), (695, 26961), (817, 22935), (1045, 17931), (1419, 13205), (1529, 12255), (2085, 8987), (2365, 7923), (2451, 7645), (2641, 7095), (3135, 5977), (4085, 4587)]