1915420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:214

約数の個数: 48

約数和(自身を含む): 4445280

約数和(自身を除く): 2529860

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 139, 212, 260, 265, 278, 530, 556, 689, 695, 1060, 1378, 1390, 1807, 2756, 2780, 3445, 3614, 6890, 7228, 7367, 9035, 13780, 14734, 18070, 29468, 36140, 36835, 73670, 95771, 147340, 191542, 383084, 478855, 957710, 1915420]

約数ペア:

[(1, 1915420), (2, 957710), (4, 478855), (5, 383084), (10, 191542), (13, 147340), (20, 95771), (26, 73670), (52, 36835), (53, 36140), (65, 29468), (106, 18070), (130, 14734), (139, 13780), (212, 9035), (260, 7367), (265, 7228), (278, 6890), (530, 3614), (556, 3445), (689, 2780), (695, 2756), (1060, 1807), (1378, 1390)]