21472720

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1931}}^1$

素因数の和:2083

約数の個数: 40

約数和(自身を含む): 50309280

約数和(自身を除く): 28836560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 1931, 2224, 2780, 3862, 5560, 7724, 9655, 11120, 15448, 19310, 30896, 38620, 77240, 154480, 268409, 536818, 1073636, 1342045, 2147272, 2684090, 4294544, 5368180, 10736360, 21472720]

約数ペア:

[(1, 21472720), (2, 10736360), (4, 5368180), (5, 4294544), (8, 2684090), (10, 2147272), (16, 1342045), (20, 1073636), (40, 536818), (80, 268409), (139, 154480), (278, 77240), (556, 38620), (695, 30896), (1112, 19310), (1390, 15448), (1931, 11120), (2224, 9655), (2780, 7724), (3862, 5560)]