28461640

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{5119}}^1$

素因数の和:5269

約数の個数: 32

約数和(自身を含む): 64512000

約数和(自身を除く): 36050360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 5119, 5560, 10238, 20476, 25595, 40952, 51190, 102380, 204760, 711541, 1423082, 2846164, 3557705, 5692328, 7115410, 14230820, 28461640]

約数ペア:

[(1, 28461640), (2, 14230820), (4, 7115410), (5, 5692328), (8, 3557705), (10, 2846164), (20, 1423082), (40, 711541), (139, 204760), (278, 102380), (556, 51190), (695, 40952), (1112, 25595), (1390, 20476), (2780, 10238), (5119, 5560)]