28252720

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^2\times {\mathrm{191}}^1$

素因数の和:290

約数の個数: 60

約数和(自身を含む): 67602816

約数和(自身を除く): 39350096

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 191, 215, 344, 382, 430, 688, 764, 860, 955, 1528, 1720, 1849, 1910, 3056, 3440, 3698, 3820, 7396, 7640, 8213, 9245, 14792, 15280, 16426, 18490, 29584, 32852, 36980, 41065, 65704, 73960, 82130, 131408, 147920, 164260, 328520, 353159, 657040, 706318, 1412636, 1765795, 2825272, 3531590, 5650544, 7063180, 14126360, 28252720]

約数ペア:

[(1, 28252720), (2, 14126360), (4, 7063180), (5, 5650544), (8, 3531590), (10, 2825272), (16, 1765795), (20, 1412636), (40, 706318), (43, 657040), (80, 353159), (86, 328520), (172, 164260), (191, 147920), (215, 131408), (344, 82130), (382, 73960), (430, 65704), (688, 41065), (764, 36980), (860, 32852), (955, 29584), (1528, 18490), (1720, 16426), (1849, 15280), (1910, 14792), (3056, 9245), (3440, 8213), (3698, 7640), (3820, 7396)]