978173872

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{227}}^1\times {\mathrm{20717}}^1$

素因数の和:20965

約数の個数: 40

約数和(自身を含む): 2050087536

約数和(自身を除く): 1071913664

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 227, 454, 908, 1816, 2951, 3632, 5902, 11804, 20717, 23608, 41434, 47216, 82868, 165736, 269321, 331472, 538642, 1077284, 2154568, 4309136, 4702759, 9405518, 18811036, 37622072, 61135867, 75244144, 122271734, 244543468, 489086936, 978173872]

約数ペア:

[(1, 978173872), (2, 489086936), (4, 244543468), (8, 122271734), (13, 75244144), (16, 61135867), (26, 37622072), (52, 18811036), (104, 9405518), (208, 4702759), (227, 4309136), (454, 2154568), (908, 1077284), (1816, 538642), (2951, 331472), (3632, 269321), (5902, 165736), (11804, 82868), (20717, 47216), (23608, 41434)]