21265225

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1193}}^1$

素因数の和:1257

約数の個数: 24

約数和(自身を含む): 28426752

約数和(自身を除く): 7161527

約数列:

[1, 5, 23, 25, 31, 115, 155, 575, 713, 775, 1193, 3565, 5965, 17825, 27439, 29825, 36983, 137195, 184915, 685975, 850609, 924575, 4253045, 21265225]

約数ペア:

[(1, 21265225), (5, 4253045), (23, 924575), (25, 850609), (31, 685975), (115, 184915), (155, 137195), (575, 36983), (713, 29825), (775, 27439), (1193, 17825), (3565, 5965)]