21248535

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18397}}^1$

素因数の和:18423

約数の個数: 32

約数和(自身を含む): 42388992

約数和(自身を除く): 21140457

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, 1155, 18397, 55191, 91985, 128779, 202367, 275955, 386337, 607101, 643895, 1011835, 1416569, 1931685, 3035505, 4249707, 7082845, 21248535]

約数ペア:

[(1, 21248535), (3, 7082845), (5, 4249707), (7, 3035505), (11, 1931685), (15, 1416569), (21, 1011835), (33, 643895), (35, 607101), (55, 386337), (77, 275955), (105, 202367), (165, 128779), (231, 91985), (385, 55191), (1155, 18397)]