18420746

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:278

約数の個数: 32

約数和(自身を含む): 30205440

約数和(自身を除く): 11784694

約数列:

[1, 2, 23, 37, 46, 74, 79, 137, 158, 274, 851, 1702, 1817, 2923, 3151, 3634, 5069, 5846, 6302, 10138, 10823, 21646, 67229, 116587, 134458, 233174, 248929, 400451, 497858, 800902, 9210373, 18420746]

約数ペア:

[(1, 18420746), (2, 9210373), (23, 800902), (37, 497858), (46, 400451), (74, 248929), (79, 233174), (137, 134458), (158, 116587), (274, 67229), (851, 21646), (1702, 10823), (1817, 10138), (2923, 6302), (3151, 5846), (3634, 5069)]