280360

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 649440

約数和(自身を除く): 369080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 163, 172, 215, 326, 344, 430, 652, 815, 860, 1304, 1630, 1720, 3260, 6520, 7009, 14018, 28036, 35045, 56072, 70090, 140180, 280360]

約数ペア:

[(1, 280360), (2, 140180), (4, 70090), (5, 56072), (8, 35045), (10, 28036), (20, 14018), (40, 7009), (43, 6520), (86, 3260), (163, 1720), (172, 1630), (215, 1304), (326, 860), (344, 815), (430, 652)]