21395384

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{2579}}^1$

素因数の和:2663

約数の個数: 32

約数和(自身を含む): 43189200

約数和(自身を除く): 21793816

約数列:

[1, 2, 4, 8, 17, 34, 61, 68, 122, 136, 244, 488, 1037, 2074, 2579, 4148, 5158, 8296, 10316, 20632, 43843, 87686, 157319, 175372, 314638, 350744, 629276, 1258552, 2674423, 5348846, 10697692, 21395384]

約数ペア:

[(1, 21395384), (2, 10697692), (4, 5348846), (8, 2674423), (17, 1258552), (34, 629276), (61, 350744), (68, 314638), (122, 175372), (136, 157319), (244, 87686), (488, 43843), (1037, 20632), (2074, 10316), (2579, 8296), (4148, 5158)]