21750725

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1579}}^1$

素因数の和:1637

約数の個数: 24

約数和(自身を含む): 29388000

約数和(自身を除く): 7637275

約数列:

[1, 5, 19, 25, 29, 95, 145, 475, 551, 725, 1579, 2755, 7895, 13775, 30001, 39475, 45791, 150005, 228955, 750025, 870029, 1144775, 4350145, 21750725]

約数ペア:

[(1, 21750725), (5, 4350145), (19, 1144775), (25, 870029), (29, 750025), (95, 228955), (145, 150005), (475, 45791), (551, 39475), (725, 30001), (1579, 13775), (2755, 7895)]