128214200

素因数分解:

$2^3\times 5^2\times {\mathrm{643}}^1\times {\mathrm{997}}^1$

素因数の和:1656

約数の個数: 48

約数和(自身を含む): 298861080

約数和(自身を除く): 170646880

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 643, 997, 1286, 1994, 2572, 3215, 3988, 4985, 5144, 6430, 7976, 9970, 12860, 16075, 19940, 24925, 25720, 32150, 39880, 49850, 64300, 99700, 128600, 199400, 641071, 1282142, 2564284, 3205355, 5128568, 6410710, 12821420, 16026775, 25642840, 32053550, 64107100, 128214200]

約数ペア:

[(1, 128214200), (2, 64107100), (4, 32053550), (5, 25642840), (8, 16026775), (10, 12821420), (20, 6410710), (25, 5128568), (40, 3205355), (50, 2564284), (100, 1282142), (200, 641071), (643, 199400), (997, 128600), (1286, 99700), (1994, 64300), (2572, 49850), (3215, 39880), (3988, 32150), (4985, 25720), (5144, 24925), (6430, 19940), (7976, 16075), (9970, 12860)]