20016920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:193

約数の個数: 128

約数和(自身を含む): 57576960

約数和(自身を除く): 37560040

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 67, 70, 77, 88, 97, 110, 134, 140, 154, 194, 220, 268, 280, 308, 335, 385, 388, 440, 469, 485, 536, 616, 670, 679, 737, 770, 776, 938, 970, 1067, 1340, 1358, 1474, 1540, 1876, 1940, 2134, 2345, 2680, 2716, 2948, 3080, 3395, 3685, 3752, 3880, 4268, 4690, 5159, 5335, 5432, 5896, 6499, 6790, 7370, 7469, 8536, 9380, 10318, 10670, 12998, 13580, 14740, 14938, 18760, 20636, 21340, 25795, 25996, 27160, 29480, 29876, 32495, 37345, 41272, 42680, 45493, 51590, 51992, 59752, 64990, 71489, 74690, 90986, 103180, 129980, 142978, 149380, 181972, 206360, 227465, 259960, 285956, 298760, 357445, 363944, 454930, 500423, 571912, 714890, 909860, 1000846, 1429780, 1819720, 2001692, 2502115, 2859560, 4003384, 5004230, 10008460, 20016920]

約数ペア:

[(1, 20016920), (2, 10008460), (4, 5004230), (5, 4003384), (7, 2859560), (8, 2502115), (10, 2001692), (11, 1819720), (14, 1429780), (20, 1000846), (22, 909860), (28, 714890), (35, 571912), (40, 500423), (44, 454930), (55, 363944), (56, 357445), (67, 298760), (70, 285956), (77, 259960), (88, 227465), (97, 206360), (110, 181972), (134, 149380), (140, 142978), (154, 129980), (194, 103180), (220, 90986), (268, 74690), (280, 71489), (308, 64990), (335, 59752), (385, 51992), (388, 51590), (440, 45493), (469, 42680), (485, 41272), (536, 37345), (616, 32495), (670, 29876), (679, 29480), (737, 27160), (770, 25996), (776, 25795), (938, 21340), (970, 20636), (1067, 18760), (1340, 14938), (1358, 14740), (1474, 13580), (1540, 12998), (1876, 10670), (1940, 10318), (2134, 9380), (2345, 8536), (2680, 7469), (2716, 7370), (2948, 6790), (3080, 6499), (3395, 5896), (3685, 5432), (3752, 5335), (3880, 5159), (4268, 4690)]