20049910100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{256721}}^1$

素因数の和:256817

約数の個数: 72

約数和(自身を含む): 48132294336

約数和(自身を除く): 28082384236

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 71, 100, 110, 142, 220, 275, 284, 355, 550, 710, 781, 1100, 1420, 1562, 1775, 3124, 3550, 3905, 7100, 7810, 15620, 19525, 39050, 78100, 256721, 513442, 1026884, 1283605, 2567210, 2823931, 5134420, 5647862, 6418025, 11295724, 12836050, 14119655, 18227191, 25672100, 28239310, 36454382, 56478620, 70598275, 72908764, 91135955, 141196550, 182271910, 200499101, 282393100, 364543820, 400998202, 455679775, 801996404, 911359550, 1002495505, 1822719100, 2004991010, 4009982020, 5012477525, 10024955050, 20049910100]

約数ペア:

[(1, 20049910100), (2, 10024955050), (4, 5012477525), (5, 4009982020), (10, 2004991010), (11, 1822719100), (20, 1002495505), (22, 911359550), (25, 801996404), (44, 455679775), (50, 400998202), (55, 364543820), (71, 282393100), (100, 200499101), (110, 182271910), (142, 141196550), (220, 91135955), (275, 72908764), (284, 70598275), (355, 56478620), (550, 36454382), (710, 28239310), (781, 25672100), (1100, 18227191), (1420, 14119655), (1562, 12836050), (1775, 11295724), (3124, 6418025), (3550, 5647862), (3905, 5134420), (7100, 2823931), (7810, 2567210), (15620, 1283605), (19525, 1026884), (39050, 513442), (78100, 256721)]