8421875

素因数分解:

$5^6\times 7^2\times {\mathrm{11}}^1$

素因数の和:55

約数の個数: 42

約数和(自身を含む): 13359204

約数和(自身を除く): 4937329

約数列:

[1, 5, 7, 11, 25, 35, 49, 55, 77, 125, 175, 245, 275, 385, 539, 625, 875, 1225, 1375, 1925, 2695, 3125, 4375, 6125, 6875, 9625, 13475, 15625, 21875, 30625, 34375, 48125, 67375, 109375, 153125, 171875, 240625, 336875, 765625, 1203125, 1684375, 8421875]

約数ペア:

[(1, 8421875), (5, 1684375), (7, 1203125), (11, 765625), (25, 336875), (35, 240625), (49, 171875), (55, 153125), (77, 109375), (125, 67375), (175, 48125), (245, 34375), (275, 30625), (385, 21875), (539, 15625), (625, 13475), (875, 9625), (1225, 6875), (1375, 6125), (1925, 4375), (2695, 3125)]