21227680

素因数分解:

$2^5\times 5^1\times {\mathrm{181}}^1\times {\mathrm{733}}^1$

素因数の和:929

約数の個数: 48

約数和(自身を含む): 50496264

約数和(自身を除く): 29268584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 181, 362, 724, 733, 905, 1448, 1466, 1810, 2896, 2932, 3620, 3665, 5792, 5864, 7240, 7330, 11728, 14480, 14660, 23456, 28960, 29320, 58640, 117280, 132673, 265346, 530692, 663365, 1061384, 1326730, 2122768, 2653460, 4245536, 5306920, 10613840, 21227680]

約数ペア:

[(1, 21227680), (2, 10613840), (4, 5306920), (5, 4245536), (8, 2653460), (10, 2122768), (16, 1326730), (20, 1061384), (32, 663365), (40, 530692), (80, 265346), (160, 132673), (181, 117280), (362, 58640), (724, 29320), (733, 28960), (905, 23456), (1448, 14660), (1466, 14480), (1810, 11728), (2896, 7330), (2932, 7240), (3620, 5864), (3665, 5792)]