21928005

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1429}}^1$

素因数の和:1482

約数の個数: 48

約数和(自身を含む): 42831360

約数和(自身を除く): 20903355

約数列:

[1, 3, 5, 9, 11, 15, 31, 33, 45, 55, 93, 99, 155, 165, 279, 341, 465, 495, 1023, 1395, 1429, 1705, 3069, 4287, 5115, 7145, 12861, 15345, 15719, 21435, 44299, 47157, 64305, 78595, 132897, 141471, 221495, 235785, 398691, 487289, 664485, 707355, 1461867, 1993455, 2436445, 4385601, 7309335, 21928005]

約数ペア:

[(1, 21928005), (3, 7309335), (5, 4385601), (9, 2436445), (11, 1993455), (15, 1461867), (31, 707355), (33, 664485), (45, 487289), (55, 398691), (93, 235785), (99, 221495), (155, 141471), (165, 132897), (279, 78595), (341, 64305), (465, 47157), (495, 44299), (1023, 21435), (1395, 15719), (1429, 15345), (1705, 12861), (3069, 7145), (4287, 5115)]