389613080

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{207241}}^1$

素因数の和:207299

約数の個数: 32

約数和(自身を含む): 895285440

約数和(自身を除く): 505672360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 207241, 414482, 828964, 1036205, 1657928, 2072410, 4144820, 8289640, 9740327, 19480654, 38961308, 48701635, 77922616, 97403270, 194806540, 389613080]

約数ペア:

[(1, 389613080), (2, 194806540), (4, 97403270), (5, 77922616), (8, 48701635), (10, 38961308), (20, 19480654), (40, 9740327), (47, 8289640), (94, 4144820), (188, 2072410), (235, 1657928), (376, 1036205), (470, 828964), (940, 414482), (1880, 207241)]