19905004

素因数分解:

$2^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{5189}}^1$

素因数の和:5337

約数の個数: 24

約数和(自身を含む): 40108320

約数和(自身を除く): 20203316

約数列:

[1, 2, 4, 7, 14, 28, 137, 274, 548, 959, 1918, 3836, 5189, 10378, 20756, 36323, 72646, 145292, 710893, 1421786, 2843572, 4976251, 9952502, 19905004]

約数ペア:

[(1, 19905004), (2, 9952502), (4, 4976251), (7, 2843572), (14, 1421786), (28, 710893), (137, 145292), (274, 72646), (548, 36323), (959, 20756), (1918, 10378), (3836, 5189)]