20788664

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{4253}}^1$

素因数の和:4319

約数の個数: 32

約数和(自身を含む): 42880320

約数和(自身を除く): 22091656

約数列:

[1, 2, 4, 8, 13, 26, 47, 52, 94, 104, 188, 376, 611, 1222, 2444, 4253, 4888, 8506, 17012, 34024, 55289, 110578, 199891, 221156, 399782, 442312, 799564, 1599128, 2598583, 5197166, 10394332, 20788664]

約数ペア:

[(1, 20788664), (2, 10394332), (4, 5197166), (8, 2598583), (13, 1599128), (26, 799564), (47, 442312), (52, 399782), (94, 221156), (104, 199891), (188, 110578), (376, 55289), (611, 34024), (1222, 17012), (2444, 8506), (4253, 4888)]