18785840

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^2\times {\mathrm{127}}^1$

素因数の和:226

約数の個数: 60

約数和(自身を含む): 45068544

約数和(自身を除く): 26282704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 127, 172, 215, 254, 344, 430, 508, 635, 688, 860, 1016, 1270, 1720, 1849, 2032, 2540, 3440, 3698, 5080, 5461, 7396, 9245, 10160, 10922, 14792, 18490, 21844, 27305, 29584, 36980, 43688, 54610, 73960, 87376, 109220, 147920, 218440, 234823, 436880, 469646, 939292, 1174115, 1878584, 2348230, 3757168, 4696460, 9392920, 18785840]

約数ペア:

[(1, 18785840), (2, 9392920), (4, 4696460), (5, 3757168), (8, 2348230), (10, 1878584), (16, 1174115), (20, 939292), (40, 469646), (43, 436880), (80, 234823), (86, 218440), (127, 147920), (172, 109220), (215, 87376), (254, 73960), (344, 54610), (430, 43688), (508, 36980), (635, 29584), (688, 27305), (860, 21844), (1016, 18490), (1270, 14792), (1720, 10922), (1849, 10160), (2032, 9245), (2540, 7396), (3440, 5461), (3698, 5080)]