19484375

素因数分解:

$5^6\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:102

約数の個数: 28

約数和(自身を含む): 25780920

約数和(自身を除く): 6296545

約数列:

[1, 5, 25, 29, 43, 125, 145, 215, 625, 725, 1075, 1247, 3125, 3625, 5375, 6235, 15625, 18125, 26875, 31175, 90625, 134375, 155875, 453125, 671875, 779375, 3896875, 19484375]

約数ペア:

[(1, 19484375), (5, 3896875), (25, 779375), (29, 671875), (43, 453125), (125, 155875), (145, 134375), (215, 90625), (625, 31175), (725, 26875), (1075, 18125), (1247, 15625), (3125, 6235), (3625, 5375)]