21117675

素因数分解:

$3^1\times 5^2\times {\mathrm{271}}^1\times {\mathrm{1039}}^1$

素因数の和:1323

約数の個数: 24

約数和(自身を含む): 35077120

約数和(自身を除く): 13959445

約数列:

[1, 3, 5, 15, 25, 75, 271, 813, 1039, 1355, 3117, 4065, 5195, 6775, 15585, 20325, 25975, 77925, 281569, 844707, 1407845, 4223535, 7039225, 21117675]

約数ペア:

[(1, 21117675), (3, 7039225), (5, 4223535), (15, 1407845), (25, 844707), (75, 281569), (271, 77925), (813, 25975), (1039, 20325), (1355, 15585), (3117, 6775), (4065, 5195)]