387804520

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{206279}}^1$

素因数の和:206337

約数の個数: 32

約数和(自身を含む): 891129600

約数和(自身を除く): 503325080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 206279, 412558, 825116, 1031395, 1650232, 2062790, 4125580, 8251160, 9695113, 19390226, 38780452, 48475565, 77560904, 96951130, 193902260, 387804520]

約数ペア:

[(1, 387804520), (2, 193902260), (4, 96951130), (5, 77560904), (8, 48475565), (10, 38780452), (20, 19390226), (40, 9695113), (47, 8251160), (94, 4125580), (188, 2062790), (235, 1650232), (376, 1031395), (470, 825116), (940, 412558), (1880, 206279)]