20546864

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{571}}^1$

素因数の和:765

約数の個数: 40

約数和(自身を含む): 43195152

約数和(自身を除く): 22648288

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 173, 208, 346, 571, 692, 1142, 1384, 2249, 2284, 2768, 4498, 4568, 7423, 8996, 9136, 14846, 17992, 29692, 35984, 59384, 98783, 118768, 197566, 395132, 790264, 1284179, 1580528, 2568358, 5136716, 10273432, 20546864]

約数ペア:

[(1, 20546864), (2, 10273432), (4, 5136716), (8, 2568358), (13, 1580528), (16, 1284179), (26, 790264), (52, 395132), (104, 197566), (173, 118768), (208, 98783), (346, 59384), (571, 35984), (692, 29692), (1142, 17992), (1384, 14846), (2249, 9136), (2284, 8996), (2768, 7423), (4498, 4568)]