21524425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{643}}^1$

素因数の和:769

約数の個数: 24

約数和(自身を含む): 29067584

約数和(自身を除く): 7543159

約数列:

[1, 5, 13, 25, 65, 103, 325, 515, 643, 1339, 2575, 3215, 6695, 8359, 16075, 33475, 41795, 66229, 208975, 331145, 860977, 1655725, 4304885, 21524425]

約数ペア:

[(1, 21524425), (5, 4304885), (13, 1655725), (25, 860977), (65, 331145), (103, 208975), (325, 66229), (515, 41795), (643, 33475), (1339, 16075), (2575, 8359), (3215, 6695)]