21230125

素因数分解:

$5^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1277}}^1$

素因数の和:1318

約数の個数: 32

約数和(自身を含む): 31898880

約数和(自身を除く): 10668755

約数列:

[1, 5, 7, 19, 25, 35, 95, 125, 133, 175, 475, 665, 875, 1277, 2375, 3325, 6385, 8939, 16625, 24263, 31925, 44695, 121315, 159625, 169841, 223475, 606575, 849205, 1117375, 3032875, 4246025, 21230125]

約数ペア:

[(1, 21230125), (5, 4246025), (7, 3032875), (19, 1117375), (25, 849205), (35, 606575), (95, 223475), (125, 169841), (133, 159625), (175, 121315), (475, 44695), (665, 31925), (875, 24263), (1277, 16625), (2375, 8939), (3325, 6385)]