1320245420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1627}}^1\times {\mathrm{3121}}^1$

素因数の和:4770

約数の個数: 48

約数和(自身を含む): 2988578208

約数和(自身を除く): 1668332788

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1627, 3121, 3254, 6242, 6508, 8135, 12484, 15605, 16270, 21151, 31210, 32540, 40573, 42302, 62420, 81146, 84604, 105755, 162292, 202865, 211510, 405730, 423020, 811460, 5077867, 10155734, 20311468, 25389335, 50778670, 66012271, 101557340, 132024542, 264049084, 330061355, 660122710, 1320245420]

約数ペア:

[(1, 1320245420), (2, 660122710), (4, 330061355), (5, 264049084), (10, 132024542), (13, 101557340), (20, 66012271), (26, 50778670), (52, 25389335), (65, 20311468), (130, 10155734), (260, 5077867), (1627, 811460), (3121, 423020), (3254, 405730), (6242, 211510), (6508, 202865), (8135, 162292), (12484, 105755), (15605, 84604), (16270, 81146), (21151, 62420), (31210, 42302), (32540, 40573)]