19753125

素因数分解:

$3^1\times 5^5\times 7^2\times {\mathrm{43}}^1$

素因数の和:85

約数の個数: 72

約数和(自身を含む): 39184992

約数和(自身を除く): 19431867

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 43, 49, 75, 105, 125, 129, 147, 175, 215, 245, 301, 375, 525, 625, 645, 735, 875, 903, 1075, 1225, 1505, 1875, 2107, 2625, 3125, 3225, 3675, 4375, 4515, 5375, 6125, 6321, 7525, 9375, 10535, 13125, 16125, 18375, 21875, 22575, 26875, 30625, 31605, 37625, 52675, 65625, 80625, 91875, 112875, 134375, 153125, 158025, 188125, 263375, 403125, 459375, 564375, 790125, 940625, 1316875, 2821875, 3950625, 6584375, 19753125]

約数ペア:

[(1, 19753125), (3, 6584375), (5, 3950625), (7, 2821875), (15, 1316875), (21, 940625), (25, 790125), (35, 564375), (43, 459375), (49, 403125), (75, 263375), (105, 188125), (125, 158025), (129, 153125), (147, 134375), (175, 112875), (215, 91875), (245, 80625), (301, 65625), (375, 52675), (525, 37625), (625, 31605), (645, 30625), (735, 26875), (875, 22575), (903, 21875), (1075, 18375), (1225, 16125), (1505, 13125), (1875, 10535), (2107, 9375), (2625, 7525), (3125, 6321), (3225, 6125), (3675, 5375), (4375, 4515)]