20554600

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{9343}}^1$

素因数の和:9370

約数の個数: 48

約数和(自身を含む): 52139520

約数和(自身を除く): 31584920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 200, 220, 275, 440, 550, 1100, 2200, 9343, 18686, 37372, 46715, 74744, 93430, 102773, 186860, 205546, 233575, 373720, 411092, 467150, 513865, 822184, 934300, 1027730, 1868600, 2055460, 2569325, 4110920, 5138650, 10277300, 20554600]

約数ペア:

[(1, 20554600), (2, 10277300), (4, 5138650), (5, 4110920), (8, 2569325), (10, 2055460), (11, 1868600), (20, 1027730), (22, 934300), (25, 822184), (40, 513865), (44, 467150), (50, 411092), (55, 373720), (88, 233575), (100, 205546), (110, 186860), (200, 102773), (220, 93430), (275, 74744), (440, 46715), (550, 37372), (1100, 18686), (2200, 9343)]