21870315

素因数分解:

$3^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{2141}}^1$

素因数の和:2379

約数の個数: 24

約数和(自身を含む): 38093328

約数和(自身を除く): 16223013

約数列:

[1, 3, 5, 9, 15, 45, 227, 681, 1135, 2043, 2141, 3405, 6423, 10215, 10705, 19269, 32115, 96345, 486007, 1458021, 2430035, 4374063, 7290105, 21870315]

約数ペア:

[(1, 21870315), (3, 7290105), (5, 4374063), (9, 2430035), (15, 1458021), (45, 486007), (227, 96345), (681, 32115), (1135, 19269), (2043, 10705), (2141, 10215), (3405, 6423)]