18982020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1231}}^1$

素因数の和:1500

約数の個数: 48

約数和(自身を含む): 53399808

約数和(自身を除く): 34417788

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 257, 514, 771, 1028, 1231, 1285, 1542, 2462, 2570, 3084, 3693, 3855, 4924, 5140, 6155, 7386, 7710, 12310, 14772, 15420, 18465, 24620, 36930, 73860, 316367, 632734, 949101, 1265468, 1581835, 1898202, 3163670, 3796404, 4745505, 6327340, 9491010, 18982020]

約数ペア:

[(1, 18982020), (2, 9491010), (3, 6327340), (4, 4745505), (5, 3796404), (6, 3163670), (10, 1898202), (12, 1581835), (15, 1265468), (20, 949101), (30, 632734), (60, 316367), (257, 73860), (514, 36930), (771, 24620), (1028, 18465), (1231, 15420), (1285, 14772), (1542, 12310), (2462, 7710), (2570, 7386), (3084, 6155), (3693, 5140), (3855, 4924)]