18923913

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{457}}^1$

素因数の和:613

約数の個数: 24

約数和(自身を含む): 28293408

約数和(自身を除く): 9369495

約数列:

[1, 3, 9, 43, 107, 129, 321, 387, 457, 963, 1371, 4113, 4601, 13803, 19651, 41409, 48899, 58953, 146697, 176859, 440091, 2102657, 6307971, 18923913]

約数ペア:

[(1, 18923913), (3, 6307971), (9, 2102657), (43, 440091), (107, 176859), (129, 146697), (321, 58953), (387, 48899), (457, 41409), (963, 19651), (1371, 13803), (4113, 4601)]