20870408

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{2749}}^1$

素因数の和:2841

約数の個数: 32

約数和(自身を含む): 42735000

約数和(自身を除く): 21864592

約数列:

[1, 2, 4, 8, 13, 26, 52, 73, 104, 146, 292, 584, 949, 1898, 2749, 3796, 5498, 7592, 10996, 21992, 35737, 71474, 142948, 200677, 285896, 401354, 802708, 1605416, 2608801, 5217602, 10435204, 20870408]

約数ペア:

[(1, 20870408), (2, 10435204), (4, 5217602), (8, 2608801), (13, 1605416), (26, 802708), (52, 401354), (73, 285896), (104, 200677), (146, 142948), (292, 71474), (584, 35737), (949, 21992), (1898, 10996), (2749, 7592), (3796, 5498)]