1320221480

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{105449}}^1$

素因数の和:105773

約数の個数: 32

約数和(自身を含む): 2980017000

約数和(自身を除く): 1659795520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 2504, 3130, 6260, 12520, 105449, 210898, 421796, 527245, 843592, 1054490, 2108980, 4217960, 33005537, 66011074, 132022148, 165027685, 264044296, 330055370, 660110740, 1320221480]

約数ペア:

[(1, 1320221480), (2, 660110740), (4, 330055370), (5, 264044296), (8, 165027685), (10, 132022148), (20, 66011074), (40, 33005537), (313, 4217960), (626, 2108980), (1252, 1054490), (1565, 843592), (2504, 527245), (3130, 421796), (6260, 210898), (12520, 105449)]