20402172880

素因数分解:

$2^4\times 5^1\times {\mathrm{6907}}^1\times {\mathrm{36923}}^1$

素因数の和:43843

約数の個数: 40

約数和(自身を含む): 47443204512

約数和(自身を除く): 27041031632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 6907, 13814, 27628, 34535, 36923, 55256, 69070, 73846, 110512, 138140, 147692, 184615, 276280, 295384, 369230, 552560, 590768, 738460, 1476920, 2953840, 255027161, 510054322, 1020108644, 1275135805, 2040217288, 2550271610, 4080434576, 5100543220, 10201086440, 20402172880]

約数ペア:

[(1, 20402172880), (2, 10201086440), (4, 5100543220), (5, 4080434576), (8, 2550271610), (10, 2040217288), (16, 1275135805), (20, 1020108644), (40, 510054322), (80, 255027161), (6907, 2953840), (13814, 1476920), (27628, 738460), (34535, 590768), (36923, 552560), (55256, 369230), (69070, 295384), (73846, 276280), (110512, 184615), (138140, 147692)]