21566220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{643}}^1$

素因数の和:711

約数の個数: 96

約数和(自身を含む): 66646272

約数和(自身を除く): 45080052

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 43, 52, 60, 65, 78, 86, 129, 130, 156, 172, 195, 215, 258, 260, 390, 430, 516, 559, 643, 645, 780, 860, 1118, 1286, 1290, 1677, 1929, 2236, 2572, 2580, 2795, 3215, 3354, 3858, 5590, 6430, 6708, 7716, 8359, 8385, 9645, 11180, 12860, 16718, 16770, 19290, 25077, 27649, 33436, 33540, 38580, 41795, 50154, 55298, 82947, 83590, 100308, 110596, 125385, 138245, 165894, 167180, 250770, 276490, 331788, 359437, 414735, 501540, 552980, 718874, 829470, 1078311, 1437748, 1658940, 1797185, 2156622, 3594370, 4313244, 5391555, 7188740, 10783110, 21566220]

約数ペア:

[(1, 21566220), (2, 10783110), (3, 7188740), (4, 5391555), (5, 4313244), (6, 3594370), (10, 2156622), (12, 1797185), (13, 1658940), (15, 1437748), (20, 1078311), (26, 829470), (30, 718874), (39, 552980), (43, 501540), (52, 414735), (60, 359437), (65, 331788), (78, 276490), (86, 250770), (129, 167180), (130, 165894), (156, 138245), (172, 125385), (195, 110596), (215, 100308), (258, 83590), (260, 82947), (390, 55298), (430, 50154), (516, 41795), (559, 38580), (643, 33540), (645, 33436), (780, 27649), (860, 25077), (1118, 19290), (1286, 16770), (1290, 16718), (1677, 12860), (1929, 11180), (2236, 9645), (2572, 8385), (2580, 8359), (2795, 7716), (3215, 6708), (3354, 6430), (3858, 5590)]