21519740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{3373}}^1$

素因数の和:3422

約数の個数: 48

約数和(自身を含む): 51014880

約数和(自身を除く): 29495140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 44, 55, 58, 110, 116, 145, 220, 290, 319, 580, 638, 1276, 1595, 3190, 3373, 6380, 6746, 13492, 16865, 33730, 37103, 67460, 74206, 97817, 148412, 185515, 195634, 371030, 391268, 489085, 742060, 978170, 1075987, 1956340, 2151974, 4303948, 5379935, 10759870, 21519740]

約数ペア:

[(1, 21519740), (2, 10759870), (4, 5379935), (5, 4303948), (10, 2151974), (11, 1956340), (20, 1075987), (22, 978170), (29, 742060), (44, 489085), (55, 391268), (58, 371030), (110, 195634), (116, 185515), (145, 148412), (220, 97817), (290, 74206), (319, 67460), (580, 37103), (638, 33730), (1276, 16865), (1595, 13492), (3190, 6746), (3373, 6380)]