20497015

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53239}}^1$

素因数の和:53262

約数の個数: 16

約数和(自身を含む): 30666240

約数和(自身を除く): 10169225

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 53239, 266195, 372673, 585629, 1863365, 2928145, 4099403, 20497015]

約数ペア:

[(1, 20497015), (5, 4099403), (7, 2928145), (11, 1863365), (35, 585629), (55, 372673), (77, 266195), (385, 53239)]