15939140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{443}}^1$

素因数の和:716

約数の個数: 48

約数和(自身を含む): 38489472

約数和(自身を除く): 22550332

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 257, 443, 514, 886, 1028, 1285, 1772, 1799, 2215, 2570, 3101, 3598, 4430, 5140, 6202, 7196, 8860, 8995, 12404, 15505, 17990, 31010, 35980, 62020, 113851, 227702, 455404, 569255, 796957, 1138510, 1593914, 2277020, 3187828, 3984785, 7969570, 15939140]

約数ペア:

[(1, 15939140), (2, 7969570), (4, 3984785), (5, 3187828), (7, 2277020), (10, 1593914), (14, 1138510), (20, 796957), (28, 569255), (35, 455404), (70, 227702), (140, 113851), (257, 62020), (443, 35980), (514, 31010), (886, 17990), (1028, 15505), (1285, 12404), (1772, 8995), (1799, 8860), (2215, 7196), (2570, 6202), (3101, 5140), (3598, 4430)]