19947225

素因数分解:

$3^1\times 5^2\times {\mathrm{317}}^1\times {\mathrm{839}}^1$

素因数の和:1169

約数の個数: 24

約数和(自身を含む): 33122880

約数和(自身を除く): 13175655

約数列:

[1, 3, 5, 15, 25, 75, 317, 839, 951, 1585, 2517, 4195, 4755, 7925, 12585, 20975, 23775, 62925, 265963, 797889, 1329815, 3989445, 6649075, 19947225]

約数ペア:

[(1, 19947225), (3, 6649075), (5, 3989445), (15, 1329815), (25, 797889), (75, 265963), (317, 62925), (839, 23775), (951, 20975), (1585, 12585), (2517, 7925), (4195, 4755)]