21091497

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{587}}^1$

素因数の和:685

約数の個数: 32

約数和(自身を含む): 33868800

約数和(自身を除く): 12777303

約数列:

[1, 3, 7, 21, 29, 59, 87, 177, 203, 413, 587, 609, 1239, 1711, 1761, 4109, 5133, 11977, 12327, 17023, 34633, 35931, 51069, 103899, 119161, 242431, 357483, 727293, 1004357, 3013071, 7030499, 21091497]

約数ペア:

[(1, 21091497), (3, 7030499), (7, 3013071), (21, 1004357), (29, 727293), (59, 357483), (87, 242431), (177, 119161), (203, 103899), (413, 51069), (587, 35931), (609, 34633), (1239, 17023), (1711, 12327), (1761, 11977), (4109, 5133)]