21253518

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{359}}^1$

素因数の和:414

約数の個数: 96

約数和(自身を含む): 56609280

約数和(自身を除く): 35355762

約数列:

[1, 2, 3, 6, 9, 11, 13, 18, 22, 23, 26, 33, 39, 46, 66, 69, 78, 99, 117, 138, 143, 198, 207, 234, 253, 286, 299, 359, 414, 429, 506, 598, 718, 759, 858, 897, 1077, 1287, 1518, 1794, 2154, 2277, 2574, 2691, 3231, 3289, 3949, 4554, 4667, 5382, 6462, 6578, 7898, 8257, 9334, 9867, 11847, 14001, 16514, 19734, 23694, 24771, 28002, 29601, 35541, 42003, 49542, 51337, 59202, 71082, 74313, 84006, 90827, 102674, 107341, 148626, 154011, 181654, 214682, 272481, 308022, 322023, 462033, 544962, 644046, 817443, 924066, 966069, 1180751, 1634886, 1932138, 2361502, 3542253, 7084506, 10626759, 21253518]

約数ペア:

[(1, 21253518), (2, 10626759), (3, 7084506), (6, 3542253), (9, 2361502), (11, 1932138), (13, 1634886), (18, 1180751), (22, 966069), (23, 924066), (26, 817443), (33, 644046), (39, 544962), (46, 462033), (66, 322023), (69, 308022), (78, 272481), (99, 214682), (117, 181654), (138, 154011), (143, 148626), (198, 107341), (207, 102674), (234, 90827), (253, 84006), (286, 74313), (299, 71082), (359, 59202), (414, 51337), (429, 49542), (506, 42003), (598, 35541), (718, 29601), (759, 28002), (858, 24771), (897, 23694), (1077, 19734), (1287, 16514), (1518, 14001), (1794, 11847), (2154, 9867), (2277, 9334), (2574, 8257), (2691, 7898), (3231, 6578), (3289, 6462), (3949, 5382), (4554, 4667)]