991375

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1$

素因数の和:136

約数の個数: 32

約数和(自身を含む): 1557504

約数和(自身を除く): 566129

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 103, 125, 175, 275, 385, 515, 721, 875, 1133, 1375, 1925, 2575, 3605, 5665, 7931, 9625, 12875, 18025, 28325, 39655, 90125, 141625, 198275, 991375]

約数ペア:

[(1, 991375), (5, 198275), (7, 141625), (11, 90125), (25, 39655), (35, 28325), (55, 18025), (77, 12875), (103, 9625), (125, 7931), (175, 5665), (275, 3605), (385, 2575), (515, 1925), (721, 1375), (875, 1133)]