21781159005

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{1489}}^1\times {\mathrm{20749}}^1$

素因数の和:22293

約数の個数: 32

約数和(自身を含む): 35616960000

約数和(自身を除く): 13835800995

約数列:

[1, 3, 5, 15, 47, 141, 235, 705, 1489, 4467, 7445, 20749, 22335, 62247, 69983, 103745, 209949, 311235, 349915, 975203, 1049745, 2925609, 4876015, 14628045, 30895261, 92685783, 154476305, 463428915, 1452077267, 4356231801, 7260386335, 21781159005]

約数ペア:

[(1, 21781159005), (3, 7260386335), (5, 4356231801), (15, 1452077267), (47, 463428915), (141, 154476305), (235, 92685783), (705, 30895261), (1489, 14628045), (4467, 4876015), (7445, 2925609), (20749, 1049745), (22335, 975203), (62247, 349915), (69983, 311235), (103745, 209949)]