81890820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{701}}^1$

素因数の和:786

約数の個数: 144

約数和(自身を含む): 275970240

約数和(自身を除く): 194079420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 59, 60, 66, 90, 99, 110, 118, 132, 165, 177, 180, 198, 220, 236, 295, 330, 354, 396, 495, 531, 590, 649, 660, 701, 708, 885, 990, 1062, 1180, 1298, 1402, 1770, 1947, 1980, 2103, 2124, 2596, 2655, 2804, 3245, 3505, 3540, 3894, 4206, 5310, 5841, 6309, 6490, 7010, 7711, 7788, 8412, 9735, 10515, 10620, 11682, 12618, 12980, 14020, 15422, 19470, 21030, 23133, 23364, 25236, 29205, 30844, 31545, 38555, 38940, 41359, 42060, 46266, 58410, 63090, 69399, 77110, 82718, 92532, 115665, 116820, 124077, 126180, 138798, 154220, 165436, 206795, 231330, 248154, 277596, 346995, 372231, 413590, 454949, 462660, 496308, 620385, 693990, 744462, 827180, 909898, 1240770, 1364847, 1387980, 1488924, 1819796, 1861155, 2274745, 2481540, 2729694, 3722310, 4094541, 4549490, 5459388, 6824235, 7444620, 8189082, 9098980, 13648470, 16378164, 20472705, 27296940, 40945410, 81890820]

約数ペア:

[(1, 81890820), (2, 40945410), (3, 27296940), (4, 20472705), (5, 16378164), (6, 13648470), (9, 9098980), (10, 8189082), (11, 7444620), (12, 6824235), (15, 5459388), (18, 4549490), (20, 4094541), (22, 3722310), (30, 2729694), (33, 2481540), (36, 2274745), (44, 1861155), (45, 1819796), (55, 1488924), (59, 1387980), (60, 1364847), (66, 1240770), (90, 909898), (99, 827180), (110, 744462), (118, 693990), (132, 620385), (165, 496308), (177, 462660), (180, 454949), (198, 413590), (220, 372231), (236, 346995), (295, 277596), (330, 248154), (354, 231330), (396, 206795), (495, 165436), (531, 154220), (590, 138798), (649, 126180), (660, 124077), (701, 116820), (708, 115665), (885, 92532), (990, 82718), (1062, 77110), (1180, 69399), (1298, 63090), (1402, 58410), (1770, 46266), (1947, 42060), (1980, 41359), (2103, 38940), (2124, 38555), (2596, 31545), (2655, 30844), (2804, 29205), (3245, 25236), (3505, 23364), (3540, 23133), (3894, 21030), (4206, 19470), (5310, 15422), (5841, 14020), (6309, 12980), (6490, 12618), (7010, 11682), (7711, 10620), (7788, 10515), (8412, 9735)]