21115172

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{1699}}^1$

素因数の和:1955

約数の個数: 24

約数和(自身を含む): 39984000

約数和(自身を除く): 18868828

約数列:

[1, 2, 4, 13, 26, 52, 239, 478, 956, 1699, 3107, 3398, 6214, 6796, 12428, 22087, 44174, 88348, 406061, 812122, 1624244, 5278793, 10557586, 21115172]

約数ペア:

[(1, 21115172), (2, 10557586), (4, 5278793), (13, 1624244), (26, 812122), (52, 406061), (239, 88348), (478, 44174), (956, 22087), (1699, 12428), (3107, 6796), (3398, 6214)]