12507280

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1979}}^1$

素因数の和:2071

約数の個数: 40

約数和(自身を含む): 29462400

約数和(自身を除く): 16955120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 1979, 3160, 3958, 6320, 7916, 9895, 15832, 19790, 31664, 39580, 79160, 156341, 158320, 312682, 625364, 781705, 1250728, 1563410, 2501456, 3126820, 6253640, 12507280]

約数ペア:

[(1, 12507280), (2, 6253640), (4, 3126820), (5, 2501456), (8, 1563410), (10, 1250728), (16, 781705), (20, 625364), (40, 312682), (79, 158320), (80, 156341), (158, 79160), (316, 39580), (395, 31664), (632, 19790), (790, 15832), (1264, 9895), (1580, 7916), (1979, 6320), (3160, 3958)]