1296755560

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{297421}}^1$

素因数の和:297541

約数の個数: 32

約数和(自身を含む): 2944477800

約数和(自身を除く): 1647722240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 297421, 594842, 1189684, 1487105, 2379368, 2974210, 5948420, 11896840, 32418889, 64837778, 129675556, 162094445, 259351112, 324188890, 648377780, 1296755560]

約数ペア:

[(1, 1296755560), (2, 648377780), (4, 324188890), (5, 259351112), (8, 162094445), (10, 129675556), (20, 64837778), (40, 32418889), (109, 11896840), (218, 5948420), (436, 2974210), (545, 2379368), (872, 1487105), (1090, 1189684), (2180, 594842), (4360, 297421)]