15890480

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1429}}^1$

素因数の和:1581

約数の個数: 40

約数和(自身を含む): 37237200

約数和(自身を除く): 21346720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 1429, 2224, 2780, 2858, 5560, 5716, 7145, 11120, 11432, 14290, 22864, 28580, 57160, 114320, 198631, 397262, 794524, 993155, 1589048, 1986310, 3178096, 3972620, 7945240, 15890480]

約数ペア:

[(1, 15890480), (2, 7945240), (4, 3972620), (5, 3178096), (8, 1986310), (10, 1589048), (16, 993155), (20, 794524), (40, 397262), (80, 198631), (139, 114320), (278, 57160), (556, 28580), (695, 22864), (1112, 14290), (1390, 11432), (1429, 11120), (2224, 7145), (2780, 5716), (2858, 5560)]