20795940

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1$

素因数の和:424

約数の個数: 144

約数和(自身を含む): 71547840

約数和(自身を除く): 50751900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 27, 30, 33, 36, 44, 45, 54, 55, 60, 66, 81, 90, 99, 108, 110, 132, 135, 162, 165, 180, 198, 220, 243, 270, 297, 324, 330, 389, 396, 405, 486, 495, 540, 594, 660, 778, 810, 891, 972, 990, 1167, 1188, 1215, 1485, 1556, 1620, 1782, 1945, 1980, 2334, 2430, 2673, 2970, 3501, 3564, 3890, 4279, 4455, 4668, 4860, 5346, 5835, 5940, 7002, 7780, 8558, 8910, 10503, 10692, 11670, 12837, 13365, 14004, 17116, 17505, 17820, 21006, 21395, 23340, 25674, 26730, 31509, 35010, 38511, 42012, 42790, 51348, 52515, 53460, 63018, 64185, 70020, 77022, 85580, 94527, 105030, 115533, 126036, 128370, 154044, 157545, 189054, 192555, 210060, 231066, 256740, 315090, 346599, 378108, 385110, 462132, 472635, 577665, 630180, 693198, 770220, 945270, 1039797, 1155330, 1386396, 1732995, 1890540, 2079594, 2310660, 3465990, 4159188, 5198985, 6931980, 10397970, 20795940]

約数ペア:

[(1, 20795940), (2, 10397970), (3, 6931980), (4, 5198985), (5, 4159188), (6, 3465990), (9, 2310660), (10, 2079594), (11, 1890540), (12, 1732995), (15, 1386396), (18, 1155330), (20, 1039797), (22, 945270), (27, 770220), (30, 693198), (33, 630180), (36, 577665), (44, 472635), (45, 462132), (54, 385110), (55, 378108), (60, 346599), (66, 315090), (81, 256740), (90, 231066), (99, 210060), (108, 192555), (110, 189054), (132, 157545), (135, 154044), (162, 128370), (165, 126036), (180, 115533), (198, 105030), (220, 94527), (243, 85580), (270, 77022), (297, 70020), (324, 64185), (330, 63018), (389, 53460), (396, 52515), (405, 51348), (486, 42790), (495, 42012), (540, 38511), (594, 35010), (660, 31509), (778, 26730), (810, 25674), (891, 23340), (972, 21395), (990, 21006), (1167, 17820), (1188, 17505), (1215, 17116), (1485, 14004), (1556, 13365), (1620, 12837), (1782, 11670), (1945, 10692), (1980, 10503), (2334, 8910), (2430, 8558), (2673, 7780), (2970, 7002), (3501, 5940), (3564, 5835), (3890, 5346), (4279, 4860), (4455, 4668)]