81657360

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{4931}}^1$

素因数の和:4973

約数の個数: 120

約数和(自身を含む): 286213824

約数和(自身を除く): 204556464

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 36, 40, 45, 46, 48, 60, 69, 72, 80, 90, 92, 115, 120, 138, 144, 180, 184, 207, 230, 240, 276, 345, 360, 368, 414, 460, 552, 690, 720, 828, 920, 1035, 1104, 1380, 1656, 1840, 2070, 2760, 3312, 4140, 4931, 5520, 8280, 9862, 14793, 16560, 19724, 24655, 29586, 39448, 44379, 49310, 59172, 73965, 78896, 88758, 98620, 113413, 118344, 147930, 177516, 197240, 221895, 226826, 236688, 295860, 340239, 355032, 394480, 443790, 453652, 567065, 591720, 680478, 710064, 887580, 907304, 1020717, 1134130, 1183440, 1360956, 1701195, 1775160, 1814608, 2041434, 2268260, 2721912, 3402390, 3550320, 4082868, 4536520, 5103585, 5443824, 6804780, 8165736, 9073040, 10207170, 13609560, 16331472, 20414340, 27219120, 40828680, 81657360]

約数ペア:

[(1, 81657360), (2, 40828680), (3, 27219120), (4, 20414340), (5, 16331472), (6, 13609560), (8, 10207170), (9, 9073040), (10, 8165736), (12, 6804780), (15, 5443824), (16, 5103585), (18, 4536520), (20, 4082868), (23, 3550320), (24, 3402390), (30, 2721912), (36, 2268260), (40, 2041434), (45, 1814608), (46, 1775160), (48, 1701195), (60, 1360956), (69, 1183440), (72, 1134130), (80, 1020717), (90, 907304), (92, 887580), (115, 710064), (120, 680478), (138, 591720), (144, 567065), (180, 453652), (184, 443790), (207, 394480), (230, 355032), (240, 340239), (276, 295860), (345, 236688), (360, 226826), (368, 221895), (414, 197240), (460, 177516), (552, 147930), (690, 118344), (720, 113413), (828, 98620), (920, 88758), (1035, 78896), (1104, 73965), (1380, 59172), (1656, 49310), (1840, 44379), (2070, 39448), (2760, 29586), (3312, 24655), (4140, 19724), (4931, 16560), (5520, 14793), (8280, 9862)]