21058140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{281}}^1\times {\mathrm{1249}}^1$

素因数の和:1542

約数の個数: 48

約数和(自身を含む): 59220000

約数和(自身を除く): 38161860

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 281, 562, 843, 1124, 1249, 1405, 1686, 2498, 2810, 3372, 3747, 4215, 4996, 5620, 6245, 7494, 8430, 12490, 14988, 16860, 18735, 24980, 37470, 74940, 350969, 701938, 1052907, 1403876, 1754845, 2105814, 3509690, 4211628, 5264535, 7019380, 10529070, 21058140]

約数ペア:

[(1, 21058140), (2, 10529070), (3, 7019380), (4, 5264535), (5, 4211628), (6, 3509690), (10, 2105814), (12, 1754845), (15, 1403876), (20, 1052907), (30, 701938), (60, 350969), (281, 74940), (562, 37470), (843, 24980), (1124, 18735), (1249, 16860), (1405, 14988), (1686, 12490), (2498, 8430), (2810, 7494), (3372, 6245), (3747, 5620), (4215, 4996)]