18881961

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1$

素因数の和:305

約数の個数: 32

約数和(自身を含む): 29694720

約数和(自身を除く): 10812759

約数列:

[1, 3, 7, 21, 73, 109, 113, 219, 327, 339, 511, 763, 791, 1533, 2289, 2373, 7957, 8249, 12317, 23871, 24747, 36951, 55699, 57743, 86219, 167097, 173229, 258657, 899141, 2697423, 6293987, 18881961]

約数ペア:

[(1, 18881961), (3, 6293987), (7, 2697423), (21, 899141), (73, 258657), (109, 173229), (113, 167097), (219, 86219), (327, 57743), (339, 55699), (511, 36951), (763, 24747), (791, 23871), (1533, 12317), (2289, 8249), (2373, 7957)]