20671792

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{587}}^1$

素因数の和:697

約数の個数: 40

約数和(自身を含む): 41997312

約数和(自身を除く): 21325520

約数列:

[1, 2, 4, 8, 16, 31, 62, 71, 124, 142, 248, 284, 496, 568, 587, 1136, 1174, 2201, 2348, 4402, 4696, 8804, 9392, 17608, 18197, 35216, 36394, 41677, 72788, 83354, 145576, 166708, 291152, 333416, 666832, 1291987, 2583974, 5167948, 10335896, 20671792]

約数ペア:

[(1, 20671792), (2, 10335896), (4, 5167948), (8, 2583974), (16, 1291987), (31, 666832), (62, 333416), (71, 291152), (124, 166708), (142, 145576), (248, 83354), (284, 72788), (496, 41677), (568, 36394), (587, 35216), (1136, 18197), (1174, 17608), (2201, 9392), (2348, 8804), (4402, 4696)]