21421395

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{6899}}^1$

素因数の和:6936

約数の個数: 32

約数和(自身を含む): 39744000

約数和(自身を除く): 18322605

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 207, 345, 621, 1035, 3105, 6899, 20697, 34495, 62091, 103485, 158677, 186273, 310455, 476031, 793385, 931365, 1428093, 2380155, 4284279, 7140465, 21421395]

約数ペア:

[(1, 21421395), (3, 7140465), (5, 4284279), (9, 2380155), (15, 1428093), (23, 931365), (27, 793385), (45, 476031), (69, 310455), (115, 186273), (135, 158677), (207, 103485), (345, 62091), (621, 34495), (1035, 20697), (3105, 6899)]