21592820

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{631}}^1$

素因数の和:728

約数の個数: 48

約数和(自身を含む): 47779200

約数和(自身を除く): 26186380

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 59, 116, 118, 145, 236, 290, 295, 580, 590, 631, 1180, 1262, 1711, 2524, 3155, 3422, 6310, 6844, 8555, 12620, 17110, 18299, 34220, 36598, 37229, 73196, 74458, 91495, 148916, 182990, 186145, 365980, 372290, 744580, 1079641, 2159282, 4318564, 5398205, 10796410, 21592820]

約数ペア:

[(1, 21592820), (2, 10796410), (4, 5398205), (5, 4318564), (10, 2159282), (20, 1079641), (29, 744580), (58, 372290), (59, 365980), (116, 186145), (118, 182990), (145, 148916), (236, 91495), (290, 74458), (295, 73196), (580, 37229), (590, 36598), (631, 34220), (1180, 18299), (1262, 17110), (1711, 12620), (2524, 8555), (3155, 6844), (3422, 6310)]