21521970

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1009}}^1$

素因数の和:1104

約数の個数: 64

約数和(自身を含む): 58176000

約数和(自身を除く): 36654030

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 79, 90, 135, 158, 237, 270, 395, 474, 711, 790, 1009, 1185, 1422, 2018, 2133, 2370, 3027, 3555, 4266, 5045, 6054, 7110, 9081, 10090, 10665, 15135, 18162, 21330, 27243, 30270, 45405, 54486, 79711, 90810, 136215, 159422, 239133, 272430, 398555, 478266, 717399, 797110, 1195665, 1434798, 2152197, 2391330, 3586995, 4304394, 7173990, 10760985, 21521970]

約数ペア:

[(1, 21521970), (2, 10760985), (3, 7173990), (5, 4304394), (6, 3586995), (9, 2391330), (10, 2152197), (15, 1434798), (18, 1195665), (27, 797110), (30, 717399), (45, 478266), (54, 398555), (79, 272430), (90, 239133), (135, 159422), (158, 136215), (237, 90810), (270, 79711), (395, 54486), (474, 45405), (711, 30270), (790, 27243), (1009, 21330), (1185, 18162), (1422, 15135), (2018, 10665), (2133, 10090), (2370, 9081), (3027, 7110), (3555, 6054), (4266, 5045)]