2821875

素因数分解:

$3^1\times 5^5\times 7^1\times {\mathrm{43}}^1$

素因数の和:78

約数の個数: 48

約数和(自身を含む): 5499648

約数和(自身を除く): 2677773

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 43, 75, 105, 125, 129, 175, 215, 301, 375, 525, 625, 645, 875, 903, 1075, 1505, 1875, 2625, 3125, 3225, 4375, 4515, 5375, 7525, 9375, 13125, 16125, 21875, 22575, 26875, 37625, 65625, 80625, 112875, 134375, 188125, 403125, 564375, 940625, 2821875]

約数ペア:

[(1, 2821875), (3, 940625), (5, 564375), (7, 403125), (15, 188125), (21, 134375), (25, 112875), (35, 80625), (43, 65625), (75, 37625), (105, 26875), (125, 22575), (129, 21875), (175, 16125), (215, 13125), (301, 9375), (375, 7525), (525, 5375), (625, 4515), (645, 4375), (875, 3225), (903, 3125), (1075, 2625), (1505, 1875)]