21461375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{281}}^1$

素因数の和:356

約数の個数: 32

約数和(自身を含む): 29562624

約数和(自身を除く): 8101249

約数列:

[1, 5, 13, 25, 47, 65, 125, 235, 281, 325, 611, 1175, 1405, 1625, 3055, 3653, 5875, 7025, 13207, 15275, 18265, 35125, 66035, 76375, 91325, 171691, 330175, 456625, 858455, 1650875, 4292275, 21461375]

約数ペア:

[(1, 21461375), (5, 4292275), (13, 1650875), (25, 858455), (47, 456625), (65, 330175), (125, 171691), (235, 91325), (281, 76375), (325, 66035), (611, 35125), (1175, 18265), (1405, 15275), (1625, 13207), (3055, 7025), (3653, 5875)]