21276495

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{337}}^1$

素因数の和:432

約数の個数: 48

約数和(自身を含む): 39229632

約数和(自身を除く): 17953137

約数列:

[1, 3, 5, 9, 15, 23, 45, 61, 69, 115, 183, 207, 305, 337, 345, 549, 915, 1011, 1035, 1403, 1685, 2745, 3033, 4209, 5055, 7015, 7751, 12627, 15165, 20557, 21045, 23253, 38755, 61671, 63135, 69759, 102785, 116265, 185013, 308355, 348795, 472811, 925065, 1418433, 2364055, 4255299, 7092165, 21276495]

約数ペア:

[(1, 21276495), (3, 7092165), (5, 4255299), (9, 2364055), (15, 1418433), (23, 925065), (45, 472811), (61, 348795), (69, 308355), (115, 185013), (183, 116265), (207, 102785), (305, 69759), (337, 63135), (345, 61671), (549, 38755), (915, 23253), (1011, 21045), (1035, 20557), (1403, 15165), (1685, 12627), (2745, 7751), (3033, 7015), (4209, 5055)]