218006480

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{26981}}^1$

素因数の和:27095

約数の個数: 40

約数和(自身を含む): 511902504

約数和(自身を除く): 293896024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 4040, 8080, 26981, 53962, 107924, 134905, 215848, 269810, 431696, 539620, 1079240, 2158480, 2725081, 5450162, 10900324, 13625405, 21800648, 27250810, 43601296, 54501620, 109003240, 218006480]

約数ペア:

[(1, 218006480), (2, 109003240), (4, 54501620), (5, 43601296), (8, 27250810), (10, 21800648), (16, 13625405), (20, 10900324), (40, 5450162), (80, 2725081), (101, 2158480), (202, 1079240), (404, 539620), (505, 431696), (808, 269810), (1010, 215848), (1616, 134905), (2020, 107924), (4040, 53962), (8080, 26981)]