21291220

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{36709}}^1$

素因数の和:36747

約数の個数: 24

約数和(自身を含む): 46254600

約数和(自身を除く): 24963380

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 36709, 73418, 146836, 183545, 367090, 734180, 1064561, 2129122, 4258244, 5322805, 10645610, 21291220]

約数ペア:

[(1, 21291220), (2, 10645610), (4, 5322805), (5, 4258244), (10, 2129122), (20, 1064561), (29, 734180), (58, 367090), (116, 183545), (145, 146836), (290, 73418), (580, 36709)]