21625740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{379}}^1$

素因数の和:711

約数の個数: 72

約数和(自身を含む): 65978640

約数和(自身を除く): 44352900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 317, 379, 634, 758, 951, 1137, 1268, 1516, 1585, 1895, 1902, 2274, 2853, 3170, 3411, 3790, 3804, 4548, 4755, 5685, 5706, 6340, 6822, 7580, 9510, 11370, 11412, 13644, 14265, 17055, 19020, 22740, 28530, 34110, 57060, 68220, 120143, 240286, 360429, 480572, 600715, 720858, 1081287, 1201430, 1441716, 1802145, 2162574, 2402860, 3604290, 4325148, 5406435, 7208580, 10812870, 21625740]

約数ペア:

[(1, 21625740), (2, 10812870), (3, 7208580), (4, 5406435), (5, 4325148), (6, 3604290), (9, 2402860), (10, 2162574), (12, 1802145), (15, 1441716), (18, 1201430), (20, 1081287), (30, 720858), (36, 600715), (45, 480572), (60, 360429), (90, 240286), (180, 120143), (317, 68220), (379, 57060), (634, 34110), (758, 28530), (951, 22740), (1137, 19020), (1268, 17055), (1516, 14265), (1585, 13644), (1895, 11412), (1902, 11370), (2274, 9510), (2853, 7580), (3170, 6822), (3411, 6340), (3790, 5706), (3804, 5685), (4548, 4755)]