21901228

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{1151}}^1$

素因数の和:1293

約数の個数: 24

約数和(自身を含む): 39481344

約数和(自身を除く): 17580116

約数列:

[1, 2, 4, 67, 71, 134, 142, 268, 284, 1151, 2302, 4604, 4757, 9514, 19028, 77117, 81721, 154234, 163442, 308468, 326884, 5475307, 10950614, 21901228]

約数ペア:

[(1, 21901228), (2, 10950614), (4, 5475307), (67, 326884), (71, 308468), (134, 163442), (142, 154234), (268, 81721), (284, 77117), (1151, 19028), (2302, 9514), (4604, 4757)]