81625140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{823}}^1$

素因数の和:886

約数の個数: 144

約数和(自身を含む): 269942400

約数和(自身を除く): 188317260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 29, 30, 36, 38, 45, 57, 58, 60, 76, 87, 90, 95, 114, 116, 145, 171, 174, 180, 190, 228, 261, 285, 290, 342, 348, 380, 435, 522, 551, 570, 580, 684, 823, 855, 870, 1044, 1102, 1140, 1305, 1646, 1653, 1710, 1740, 2204, 2469, 2610, 2755, 3292, 3306, 3420, 4115, 4938, 4959, 5220, 5510, 6612, 7407, 8230, 8265, 9876, 9918, 11020, 12345, 14814, 15637, 16460, 16530, 19836, 23867, 24690, 24795, 29628, 31274, 33060, 37035, 46911, 47734, 49380, 49590, 62548, 71601, 74070, 78185, 93822, 95468, 99180, 119335, 140733, 143202, 148140, 156370, 187644, 214803, 234555, 238670, 281466, 286404, 312740, 358005, 429606, 453473, 469110, 477340, 562932, 703665, 716010, 859212, 906946, 938220, 1074015, 1360419, 1407330, 1432020, 1813892, 2148030, 2267365, 2720838, 2814660, 4081257, 4296060, 4534730, 5441676, 6802095, 8162514, 9069460, 13604190, 16325028, 20406285, 27208380, 40812570, 81625140]

約数ペア:

[(1, 81625140), (2, 40812570), (3, 27208380), (4, 20406285), (5, 16325028), (6, 13604190), (9, 9069460), (10, 8162514), (12, 6802095), (15, 5441676), (18, 4534730), (19, 4296060), (20, 4081257), (29, 2814660), (30, 2720838), (36, 2267365), (38, 2148030), (45, 1813892), (57, 1432020), (58, 1407330), (60, 1360419), (76, 1074015), (87, 938220), (90, 906946), (95, 859212), (114, 716010), (116, 703665), (145, 562932), (171, 477340), (174, 469110), (180, 453473), (190, 429606), (228, 358005), (261, 312740), (285, 286404), (290, 281466), (342, 238670), (348, 234555), (380, 214803), (435, 187644), (522, 156370), (551, 148140), (570, 143202), (580, 140733), (684, 119335), (823, 99180), (855, 95468), (870, 93822), (1044, 78185), (1102, 74070), (1140, 71601), (1305, 62548), (1646, 49590), (1653, 49380), (1710, 47734), (1740, 46911), (2204, 37035), (2469, 33060), (2610, 31274), (2755, 29628), (3292, 24795), (3306, 24690), (3420, 23867), (4115, 19836), (4938, 16530), (4959, 16460), (5220, 15637), (5510, 14814), (6612, 12345), (7407, 11020), (8230, 9918), (8265, 9876)]