21874005

素因数分解:

$3^2\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1553}}^1$

素因数の和:1877

約数の個数: 24

約数和(自身を含む): 38060568

約数和(自身を除く): 16186563

約数列:

[1, 3, 5, 9, 15, 45, 313, 939, 1553, 1565, 2817, 4659, 4695, 7765, 13977, 14085, 23295, 69885, 486089, 1458267, 2430445, 4374801, 7291335, 21874005]

約数ペア:

[(1, 21874005), (3, 7291335), (5, 4374801), (9, 2430445), (15, 1458267), (45, 486089), (313, 69885), (939, 23295), (1553, 14085), (1565, 13977), (2817, 7765), (4659, 4695)]