20999728

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{14747}}^1$

素因数の和:14844

約数の個数: 20

約数和(自身を含む): 41146920

約数和(自身を除く): 20147192

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 14747, 29494, 58988, 117976, 235952, 1312483, 2624966, 5249932, 10499864, 20999728]

約数ペア:

[(1, 20999728), (2, 10499864), (4, 5249932), (8, 2624966), (16, 1312483), (89, 235952), (178, 117976), (356, 58988), (712, 29494), (1424, 14747)]