81727920

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{241}}^1$

素因数の和:420

約数の個数: 160

約数和(自身を含む): 284475840

約数和(自身を除く): 202747920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 90, 108, 120, 135, 144, 157, 180, 216, 240, 241, 270, 314, 360, 432, 471, 482, 540, 628, 720, 723, 785, 942, 964, 1080, 1205, 1256, 1413, 1446, 1570, 1884, 1928, 2160, 2169, 2355, 2410, 2512, 2826, 2892, 3140, 3615, 3768, 3856, 4239, 4338, 4710, 4820, 5652, 5784, 6280, 6507, 7065, 7230, 7536, 8478, 8676, 9420, 9640, 10845, 11304, 11568, 12560, 13014, 14130, 14460, 16956, 17352, 18840, 19280, 21195, 21690, 22608, 26028, 28260, 28920, 32535, 33912, 34704, 37680, 37837, 42390, 43380, 52056, 56520, 57840, 65070, 67824, 75674, 84780, 86760, 104112, 113040, 113511, 130140, 151348, 169560, 173520, 189185, 227022, 260280, 302696, 339120, 340533, 378370, 454044, 520560, 567555, 605392, 681066, 756740, 908088, 1021599, 1135110, 1362132, 1513480, 1702665, 1816176, 2043198, 2270220, 2724264, 3026960, 3405330, 4086396, 4540440, 5107995, 5448528, 6810660, 8172792, 9080880, 10215990, 13621320, 16345584, 20431980, 27242640, 40863960, 81727920]

約数ペア:

[(1, 81727920), (2, 40863960), (3, 27242640), (4, 20431980), (5, 16345584), (6, 13621320), (8, 10215990), (9, 9080880), (10, 8172792), (12, 6810660), (15, 5448528), (16, 5107995), (18, 4540440), (20, 4086396), (24, 3405330), (27, 3026960), (30, 2724264), (36, 2270220), (40, 2043198), (45, 1816176), (48, 1702665), (54, 1513480), (60, 1362132), (72, 1135110), (80, 1021599), (90, 908088), (108, 756740), (120, 681066), (135, 605392), (144, 567555), (157, 520560), (180, 454044), (216, 378370), (240, 340533), (241, 339120), (270, 302696), (314, 260280), (360, 227022), (432, 189185), (471, 173520), (482, 169560), (540, 151348), (628, 130140), (720, 113511), (723, 113040), (785, 104112), (942, 86760), (964, 84780), (1080, 75674), (1205, 67824), (1256, 65070), (1413, 57840), (1446, 56520), (1570, 52056), (1884, 43380), (1928, 42390), (2160, 37837), (2169, 37680), (2355, 34704), (2410, 33912), (2512, 32535), (2826, 28920), (2892, 28260), (3140, 26028), (3615, 22608), (3768, 21690), (3856, 21195), (4239, 19280), (4338, 18840), (4710, 17352), (4820, 16956), (5652, 14460), (5784, 14130), (6280, 13014), (6507, 12560), (7065, 11568), (7230, 11304), (7536, 10845), (8478, 9640), (8676, 9420)]