81437940

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:203

約数の個数: 192

約数和(自身を含む): 270950400

約数和(自身を除く): 189512460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 27, 30, 36, 45, 46, 54, 60, 69, 79, 83, 90, 92, 108, 115, 135, 138, 158, 166, 180, 207, 230, 237, 249, 270, 276, 316, 332, 345, 395, 414, 415, 460, 474, 498, 540, 621, 690, 711, 747, 790, 828, 830, 948, 996, 1035, 1185, 1242, 1245, 1380, 1422, 1494, 1580, 1660, 1817, 1909, 2070, 2133, 2241, 2370, 2484, 2490, 2844, 2988, 3105, 3555, 3634, 3735, 3818, 4140, 4266, 4482, 4740, 4980, 5451, 5727, 6210, 6557, 7110, 7268, 7470, 7636, 8532, 8964, 9085, 9545, 10665, 10902, 11205, 11454, 12420, 13114, 14220, 14940, 16353, 17181, 18170, 19090, 19671, 21330, 21804, 22410, 22908, 26228, 27255, 28635, 32706, 32785, 34362, 36340, 38180, 39342, 42660, 44820, 49059, 51543, 54510, 57270, 59013, 65412, 65570, 68724, 78684, 81765, 85905, 98118, 98355, 103086, 109020, 114540, 118026, 131140, 150811, 163530, 171810, 177039, 196236, 196710, 206172, 236052, 245295, 257715, 295065, 301622, 327060, 343620, 354078, 393420, 452433, 490590, 515430, 590130, 603244, 708156, 754055, 885195, 904866, 981180, 1030860, 1180260, 1357299, 1508110, 1770390, 1809732, 2262165, 2714598, 3016220, 3540780, 4071897, 4524330, 5429196, 6786495, 8143794, 9048660, 13572990, 16287588, 20359485, 27145980, 40718970, 81437940]

約数ペア:

[(1, 81437940), (2, 40718970), (3, 27145980), (4, 20359485), (5, 16287588), (6, 13572990), (9, 9048660), (10, 8143794), (12, 6786495), (15, 5429196), (18, 4524330), (20, 4071897), (23, 3540780), (27, 3016220), (30, 2714598), (36, 2262165), (45, 1809732), (46, 1770390), (54, 1508110), (60, 1357299), (69, 1180260), (79, 1030860), (83, 981180), (90, 904866), (92, 885195), (108, 754055), (115, 708156), (135, 603244), (138, 590130), (158, 515430), (166, 490590), (180, 452433), (207, 393420), (230, 354078), (237, 343620), (249, 327060), (270, 301622), (276, 295065), (316, 257715), (332, 245295), (345, 236052), (395, 206172), (414, 196710), (415, 196236), (460, 177039), (474, 171810), (498, 163530), (540, 150811), (621, 131140), (690, 118026), (711, 114540), (747, 109020), (790, 103086), (828, 98355), (830, 98118), (948, 85905), (996, 81765), (1035, 78684), (1185, 68724), (1242, 65570), (1245, 65412), (1380, 59013), (1422, 57270), (1494, 54510), (1580, 51543), (1660, 49059), (1817, 44820), (1909, 42660), (2070, 39342), (2133, 38180), (2241, 36340), (2370, 34362), (2484, 32785), (2490, 32706), (2844, 28635), (2988, 27255), (3105, 26228), (3555, 22908), (3634, 22410), (3735, 21804), (3818, 21330), (4140, 19671), (4266, 19090), (4482, 18170), (4740, 17181), (4980, 16353), (5451, 14940), (5727, 14220), (6210, 13114), (6557, 12420), (7110, 11454), (7268, 11205), (7470, 10902), (7636, 10665), (8532, 9545), (8964, 9085)]