55131920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{83}}^1$

素因数の和:157

約数の個数: 120

約数和(自身を含む): 142865856

約数和(自身を除く): 87733936

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 38, 40, 46, 76, 80, 83, 92, 95, 115, 152, 166, 184, 190, 230, 304, 332, 361, 368, 380, 415, 437, 460, 664, 722, 760, 830, 874, 920, 1328, 1444, 1520, 1577, 1660, 1748, 1805, 1840, 1909, 2185, 2888, 3154, 3320, 3496, 3610, 3818, 4370, 5776, 6308, 6640, 6992, 7220, 7636, 7885, 8303, 8740, 9545, 12616, 14440, 15272, 15770, 16606, 17480, 19090, 25232, 28880, 29963, 30544, 31540, 33212, 34960, 36271, 38180, 41515, 59926, 63080, 66424, 72542, 76360, 83030, 119852, 126160, 132848, 145084, 149815, 152720, 166060, 181355, 239704, 290168, 299630, 332120, 362710, 479408, 580336, 599260, 664240, 689149, 725420, 1198520, 1378298, 1450840, 2397040, 2756596, 2901680, 3445745, 5513192, 6891490, 11026384, 13782980, 27565960, 55131920]

約数ペア:

[(1, 55131920), (2, 27565960), (4, 13782980), (5, 11026384), (8, 6891490), (10, 5513192), (16, 3445745), (19, 2901680), (20, 2756596), (23, 2397040), (38, 1450840), (40, 1378298), (46, 1198520), (76, 725420), (80, 689149), (83, 664240), (92, 599260), (95, 580336), (115, 479408), (152, 362710), (166, 332120), (184, 299630), (190, 290168), (230, 239704), (304, 181355), (332, 166060), (361, 152720), (368, 149815), (380, 145084), (415, 132848), (437, 126160), (460, 119852), (664, 83030), (722, 76360), (760, 72542), (830, 66424), (874, 63080), (920, 59926), (1328, 41515), (1444, 38180), (1520, 36271), (1577, 34960), (1660, 33212), (1748, 31540), (1805, 30544), (1840, 29963), (1909, 28880), (2185, 25232), (2888, 19090), (3154, 17480), (3320, 16606), (3496, 15770), (3610, 15272), (3818, 14440), (4370, 12616), (5776, 9545), (6308, 8740), (6640, 8303), (6992, 7885), (7220, 7636)]