18816304

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1483}}^1$

素因数の和:1565

約数の個数: 40

約数和(自身を含む): 39931472

約数和(自身を除く): 21115168

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 61, 104, 122, 208, 244, 488, 793, 976, 1483, 1586, 2966, 3172, 5932, 6344, 11864, 12688, 19279, 23728, 38558, 77116, 90463, 154232, 180926, 308464, 361852, 723704, 1176019, 1447408, 2352038, 4704076, 9408152, 18816304]

約数ペア:

[(1, 18816304), (2, 9408152), (4, 4704076), (8, 2352038), (13, 1447408), (16, 1176019), (26, 723704), (52, 361852), (61, 308464), (104, 180926), (122, 154232), (208, 90463), (244, 77116), (488, 38558), (793, 23728), (976, 19279), (1483, 12688), (1586, 11864), (2966, 6344), (3172, 5932)]