21097575

素因数分解:

$3^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{2287}}^1$

素因数の和:2344

約数の個数: 36

約数和(自身を含む): 38726688

約数和(自身を除く): 17629113

約数列:

[1, 3, 5, 9, 15, 25, 41, 45, 75, 123, 205, 225, 369, 615, 1025, 1845, 2287, 3075, 6861, 9225, 11435, 20583, 34305, 57175, 93767, 102915, 171525, 281301, 468835, 514575, 843903, 1406505, 2344175, 4219515, 7032525, 21097575]

約数ペア:

[(1, 21097575), (3, 7032525), (5, 4219515), (9, 2344175), (15, 1406505), (25, 843903), (41, 514575), (45, 468835), (75, 281301), (123, 171525), (205, 102915), (225, 93767), (369, 57175), (615, 34305), (1025, 20583), (1845, 11435), (2287, 9225), (3075, 6861)]