218165720

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{33461}}^1$

素因数の和:33635

約数の個数: 32

約数和(自身を含む): 493899120

約数和(自身を除く): 275733400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 33461, 66922, 133844, 167305, 267688, 334610, 669220, 1338440, 5454143, 10908286, 21816572, 27270715, 43633144, 54541430, 109082860, 218165720]

約数ペア:

[(1, 218165720), (2, 109082860), (4, 54541430), (5, 43633144), (8, 27270715), (10, 21816572), (20, 10908286), (40, 5454143), (163, 1338440), (326, 669220), (652, 334610), (815, 267688), (1304, 167305), (1630, 133844), (3260, 66922), (6520, 33461)]