18033860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{499}}^1$

素因数の和:660

約数の個数: 48

約数和(自身を含む): 41160000

約数和(自身を除く): 23126140

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 260, 278, 499, 556, 695, 998, 1390, 1807, 1996, 2495, 2780, 3614, 4990, 6487, 7228, 9035, 9980, 12974, 18070, 25948, 32435, 36140, 64870, 69361, 129740, 138722, 277444, 346805, 693610, 901693, 1387220, 1803386, 3606772, 4508465, 9016930, 18033860]

約数ペア:

[(1, 18033860), (2, 9016930), (4, 4508465), (5, 3606772), (10, 1803386), (13, 1387220), (20, 901693), (26, 693610), (52, 346805), (65, 277444), (130, 138722), (139, 129740), (260, 69361), (278, 64870), (499, 36140), (556, 32435), (695, 25948), (998, 18070), (1390, 12974), (1807, 9980), (1996, 9035), (2495, 7228), (2780, 6487), (3614, 4990)]