21193016

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{11987}}^1$

素因数の和:12023

約数の個数: 32

約数和(自身を含む): 45314640

約数和(自身を除く): 24121624

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 221, 442, 884, 1768, 11987, 23974, 47948, 95896, 155831, 203779, 311662, 407558, 623324, 815116, 1246648, 1630232, 2649127, 5298254, 10596508, 21193016]

約数ペア:

[(1, 21193016), (2, 10596508), (4, 5298254), (8, 2649127), (13, 1630232), (17, 1246648), (26, 815116), (34, 623324), (52, 407558), (68, 311662), (104, 203779), (136, 155831), (221, 95896), (442, 47948), (884, 23974), (1768, 11987)]