647020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 1578528

約数和(自身を除く): 931508

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 173, 187, 220, 340, 346, 374, 692, 748, 865, 935, 1730, 1870, 1903, 2941, 3460, 3740, 3806, 5882, 7612, 9515, 11764, 14705, 19030, 29410, 32351, 38060, 58820, 64702, 129404, 161755, 323510, 647020]

約数ペア:

[(1, 647020), (2, 323510), (4, 161755), (5, 129404), (10, 64702), (11, 58820), (17, 38060), (20, 32351), (22, 29410), (34, 19030), (44, 14705), (55, 11764), (68, 9515), (85, 7612), (110, 5882), (170, 3806), (173, 3740), (187, 3460), (220, 2941), (340, 1903), (346, 1870), (374, 1730), (692, 935), (748, 865)]