19703125

素因数分解:

$5^6\times {\mathrm{13}}^1\times {\mathrm{97}}^1$

素因数の和:140

約数の個数: 28

約数和(自身を含む): 26796532

約数和(自身を除く): 7093407

約数列:

[1, 5, 13, 25, 65, 97, 125, 325, 485, 625, 1261, 1625, 2425, 3125, 6305, 8125, 12125, 15625, 31525, 40625, 60625, 157625, 203125, 303125, 788125, 1515625, 3940625, 19703125]

約数ペア:

[(1, 19703125), (5, 3940625), (13, 1515625), (25, 788125), (65, 303125), (97, 203125), (125, 157625), (325, 60625), (485, 40625), (625, 31525), (1261, 15625), (1625, 12125), (2425, 8125), (3125, 6305)]