857720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{523}}^1$

素因数の和:575

約数の個数: 32

約数和(自身を含む): 1980720

約数和(自身を除く): 1123000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 523, 820, 1046, 1640, 2092, 2615, 4184, 5230, 10460, 20920, 21443, 42886, 85772, 107215, 171544, 214430, 428860, 857720]

約数ペア:

[(1, 857720), (2, 428860), (4, 214430), (5, 171544), (8, 107215), (10, 85772), (20, 42886), (40, 21443), (41, 20920), (82, 10460), (164, 5230), (205, 4184), (328, 2615), (410, 2092), (523, 1640), (820, 1046)]