28679985

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{21977}}^1$

素因数の和:22017

約数の個数: 24

約数和(自身を含む): 51428520

約数和(自身を除く): 22748535

約数列:

[1, 3, 5, 9, 15, 29, 45, 87, 145, 261, 435, 1305, 21977, 65931, 109885, 197793, 329655, 637333, 988965, 1911999, 3186665, 5735997, 9559995, 28679985]

約数ペア:

[(1, 28679985), (3, 9559995), (5, 5735997), (9, 3186665), (15, 1911999), (29, 988965), (45, 637333), (87, 329655), (145, 197793), (261, 109885), (435, 65931), (1305, 21977)]