389650640

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{66721}}^1$

素因数の和:66807

約数の個数: 40

約数和(自身を含む): 918361608

約数和(自身を除く): 528710968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 146, 292, 365, 584, 730, 1168, 1460, 2920, 5840, 66721, 133442, 266884, 333605, 533768, 667210, 1067536, 1334420, 2668840, 4870633, 5337680, 9741266, 19482532, 24353165, 38965064, 48706330, 77930128, 97412660, 194825320, 389650640]

約数ペア:

[(1, 389650640), (2, 194825320), (4, 97412660), (5, 77930128), (8, 48706330), (10, 38965064), (16, 24353165), (20, 19482532), (40, 9741266), (73, 5337680), (80, 4870633), (146, 2668840), (292, 1334420), (365, 1067536), (584, 667210), (730, 533768), (1168, 333605), (1460, 266884), (2920, 133442), (5840, 66721)]