18540860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{2459}}^1$

素因数の和:2510

約数の個数: 48

約数和(自身を含む): 43394400

約数和(自身を除く): 24853540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 52, 58, 65, 116, 130, 145, 260, 290, 377, 580, 754, 1508, 1885, 2459, 3770, 4918, 7540, 9836, 12295, 24590, 31967, 49180, 63934, 71311, 127868, 142622, 159835, 285244, 319670, 356555, 639340, 713110, 927043, 1426220, 1854086, 3708172, 4635215, 9270430, 18540860]

約数ペア:

[(1, 18540860), (2, 9270430), (4, 4635215), (5, 3708172), (10, 1854086), (13, 1426220), (20, 927043), (26, 713110), (29, 639340), (52, 356555), (58, 319670), (65, 285244), (116, 159835), (130, 142622), (145, 127868), (260, 71311), (290, 63934), (377, 49180), (580, 31967), (754, 24590), (1508, 12295), (1885, 9836), (2459, 7540), (3770, 4918)]