19431568

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{907}}^1$

素因数の和:1031

約数の個数: 40

約数和(自身を含む): 40983488

約数和(自身を除く): 21551920

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 103, 104, 206, 208, 412, 824, 907, 1339, 1648, 1814, 2678, 3628, 5356, 7256, 10712, 11791, 14512, 21424, 23582, 47164, 93421, 94328, 186842, 188656, 373684, 747368, 1214473, 1494736, 2428946, 4857892, 9715784, 19431568]

約数ペア:

[(1, 19431568), (2, 9715784), (4, 4857892), (8, 2428946), (13, 1494736), (16, 1214473), (26, 747368), (52, 373684), (103, 188656), (104, 186842), (206, 94328), (208, 93421), (412, 47164), (824, 23582), (907, 21424), (1339, 14512), (1648, 11791), (1814, 10712), (2678, 7256), (3628, 5356)]