81156780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{181}}^1$

素因数の和:296

約数の個数: 144

約数和(自身を含む): 257572224

約数和(自身を除く): 176415444

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 47, 53, 60, 90, 94, 106, 141, 159, 180, 181, 188, 212, 235, 265, 282, 318, 362, 423, 470, 477, 530, 543, 564, 636, 705, 724, 795, 846, 905, 940, 954, 1060, 1086, 1410, 1590, 1629, 1692, 1810, 1908, 2115, 2172, 2385, 2491, 2715, 2820, 3180, 3258, 3620, 4230, 4770, 4982, 5430, 6516, 7473, 8145, 8460, 8507, 9540, 9593, 9964, 10860, 12455, 14946, 16290, 17014, 19186, 22419, 24910, 25521, 28779, 29892, 32580, 34028, 37365, 38372, 42535, 44838, 47965, 49820, 51042, 57558, 74730, 76563, 85070, 86337, 89676, 95930, 102084, 112095, 115116, 127605, 143895, 149460, 153126, 170140, 172674, 191860, 224190, 255210, 287790, 306252, 345348, 382815, 431685, 448380, 450871, 510420, 575580, 765630, 863370, 901742, 1352613, 1531260, 1726740, 1803484, 2254355, 2705226, 4057839, 4508710, 5410452, 6763065, 8115678, 9017420, 13526130, 16231356, 20289195, 27052260, 40578390, 81156780]

約数ペア:

[(1, 81156780), (2, 40578390), (3, 27052260), (4, 20289195), (5, 16231356), (6, 13526130), (9, 9017420), (10, 8115678), (12, 6763065), (15, 5410452), (18, 4508710), (20, 4057839), (30, 2705226), (36, 2254355), (45, 1803484), (47, 1726740), (53, 1531260), (60, 1352613), (90, 901742), (94, 863370), (106, 765630), (141, 575580), (159, 510420), (180, 450871), (181, 448380), (188, 431685), (212, 382815), (235, 345348), (265, 306252), (282, 287790), (318, 255210), (362, 224190), (423, 191860), (470, 172674), (477, 170140), (530, 153126), (543, 149460), (564, 143895), (636, 127605), (705, 115116), (724, 112095), (795, 102084), (846, 95930), (905, 89676), (940, 86337), (954, 85070), (1060, 76563), (1086, 74730), (1410, 57558), (1590, 51042), (1629, 49820), (1692, 47965), (1810, 44838), (1908, 42535), (2115, 38372), (2172, 37365), (2385, 34028), (2491, 32580), (2715, 29892), (2820, 28779), (3180, 25521), (3258, 24910), (3620, 22419), (4230, 19186), (4770, 17014), (4982, 16290), (5430, 14946), (6516, 12455), (7473, 10860), (8145, 9964), (8460, 9593), (8507, 9540)]