21042125

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{563}}^1$

素因数の和:614

約数の個数: 32

約数和(自身を含む): 29562624

約数和(自身を除く): 8520499

約数列:

[1, 5, 13, 23, 25, 65, 115, 125, 299, 325, 563, 575, 1495, 1625, 2815, 2875, 7319, 7475, 12949, 14075, 36595, 37375, 64745, 70375, 168337, 182975, 323725, 841685, 914875, 1618625, 4208425, 21042125]

約数ペア:

[(1, 21042125), (5, 4208425), (13, 1618625), (23, 914875), (25, 841685), (65, 323725), (115, 182975), (125, 168337), (299, 70375), (325, 64745), (563, 37375), (575, 36595), (1495, 14075), (1625, 12949), (2815, 7475), (2875, 7319)]