21489645

素因数分解:

$3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{27031}}^1$

素因数の和:27092

約数の個数: 16

約数和(自身を含む): 35033472

約数和(自身を除く): 13543827

約数列:

[1, 3, 5, 15, 53, 159, 265, 795, 27031, 81093, 135155, 405465, 1432643, 4297929, 7163215, 21489645]

約数ペア:

[(1, 21489645), (3, 7163215), (5, 4297929), (15, 1432643), (53, 405465), (159, 135155), (265, 81093), (795, 27031)]