80525720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{929}}^1$

素因数の和:1148

約数の個数: 64

約数和(自身を含む): 198871200

約数和(自身を除く): 118345480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 197, 220, 394, 440, 788, 929, 985, 1576, 1858, 1970, 2167, 3716, 3940, 4334, 4645, 7432, 7880, 8668, 9290, 10219, 10835, 17336, 18580, 20438, 21670, 37160, 40876, 43340, 51095, 81752, 86680, 102190, 183013, 204380, 366026, 408760, 732052, 915065, 1464104, 1830130, 2013143, 3660260, 4026286, 7320520, 8052572, 10065715, 16105144, 20131430, 40262860, 80525720]

約数ペア:

[(1, 80525720), (2, 40262860), (4, 20131430), (5, 16105144), (8, 10065715), (10, 8052572), (11, 7320520), (20, 4026286), (22, 3660260), (40, 2013143), (44, 1830130), (55, 1464104), (88, 915065), (110, 732052), (197, 408760), (220, 366026), (394, 204380), (440, 183013), (788, 102190), (929, 86680), (985, 81752), (1576, 51095), (1858, 43340), (1970, 40876), (2167, 37160), (3716, 21670), (3940, 20438), (4334, 18580), (4645, 17336), (7432, 10835), (7880, 10219), (8668, 9290)]