81406260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1831}}^1$

素因数の和:1878

約数の個数: 144

約数和(自身を含む): 280076160

約数和(自身を除く): 198669900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 19, 20, 26, 30, 36, 38, 39, 45, 52, 57, 60, 65, 76, 78, 90, 95, 114, 117, 130, 156, 171, 180, 190, 195, 228, 234, 247, 260, 285, 342, 380, 390, 468, 494, 570, 585, 684, 741, 780, 855, 988, 1140, 1170, 1235, 1482, 1710, 1831, 2223, 2340, 2470, 2964, 3420, 3662, 3705, 4446, 4940, 5493, 7324, 7410, 8892, 9155, 10986, 11115, 14820, 16479, 18310, 21972, 22230, 23803, 27465, 32958, 34789, 36620, 44460, 47606, 54930, 65916, 69578, 71409, 82395, 95212, 104367, 109860, 119015, 139156, 142818, 164790, 173945, 208734, 214227, 238030, 285636, 313101, 329580, 347890, 357045, 417468, 428454, 452257, 476060, 521835, 626202, 695780, 714090, 856908, 904514, 1043670, 1071135, 1252404, 1356771, 1428180, 1565505, 1809028, 2087340, 2142270, 2261285, 2713542, 3131010, 4070313, 4284540, 4522570, 5427084, 6262020, 6783855, 8140626, 9045140, 13567710, 16281252, 20351565, 27135420, 40703130, 81406260]

約数ペア:

[(1, 81406260), (2, 40703130), (3, 27135420), (4, 20351565), (5, 16281252), (6, 13567710), (9, 9045140), (10, 8140626), (12, 6783855), (13, 6262020), (15, 5427084), (18, 4522570), (19, 4284540), (20, 4070313), (26, 3131010), (30, 2713542), (36, 2261285), (38, 2142270), (39, 2087340), (45, 1809028), (52, 1565505), (57, 1428180), (60, 1356771), (65, 1252404), (76, 1071135), (78, 1043670), (90, 904514), (95, 856908), (114, 714090), (117, 695780), (130, 626202), (156, 521835), (171, 476060), (180, 452257), (190, 428454), (195, 417468), (228, 357045), (234, 347890), (247, 329580), (260, 313101), (285, 285636), (342, 238030), (380, 214227), (390, 208734), (468, 173945), (494, 164790), (570, 142818), (585, 139156), (684, 119015), (741, 109860), (780, 104367), (855, 95212), (988, 82395), (1140, 71409), (1170, 69578), (1235, 65916), (1482, 54930), (1710, 47606), (1831, 44460), (2223, 36620), (2340, 34789), (2470, 32958), (2964, 27465), (3420, 23803), (3662, 22230), (3705, 21972), (4446, 18310), (4940, 16479), (5493, 14820), (7324, 11115), (7410, 10986), (8892, 9155)]