20704216

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{877}}^1$

素因数の和:1123

約数の個数: 32

約数和(自身を含む): 42038640

約数和(自身を除く): 21334424

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 227, 454, 877, 908, 1754, 1816, 2951, 3508, 5902, 7016, 11401, 11804, 22802, 23608, 45604, 91208, 199079, 398158, 796316, 1592632, 2588027, 5176054, 10352108, 20704216]

約数ペア:

[(1, 20704216), (2, 10352108), (4, 5176054), (8, 2588027), (13, 1592632), (26, 796316), (52, 398158), (104, 199079), (227, 91208), (454, 45604), (877, 23608), (908, 22802), (1754, 11804), (1816, 11401), (2951, 7016), (3508, 5902)]