21395425

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1453}}^1$

素因数の和:1513

約数の個数: 24

約数和(自身を含む): 28847360

約数和(自身を除く): 7451935

約数列:

[1, 5, 19, 25, 31, 95, 155, 475, 589, 775, 1453, 2945, 7265, 14725, 27607, 36325, 45043, 138035, 225215, 690175, 855817, 1126075, 4279085, 21395425]

約数ペア:

[(1, 21395425), (5, 4279085), (19, 1126075), (25, 855817), (31, 690175), (95, 225215), (155, 138035), (475, 45043), (589, 36325), (775, 27607), (1453, 14725), (2945, 7265)]