81411720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2269}}^1$

素因数の和:2319

約数の個数: 128

約数和(自身を含む): 274579200

約数和(自身を除く): 193167480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 23, 24, 26, 30, 39, 40, 46, 52, 60, 65, 69, 78, 92, 104, 115, 120, 130, 138, 156, 184, 195, 230, 260, 276, 299, 312, 345, 390, 460, 520, 552, 598, 690, 780, 897, 920, 1196, 1380, 1495, 1560, 1794, 2269, 2392, 2760, 2990, 3588, 4485, 4538, 5980, 6807, 7176, 8970, 9076, 11345, 11960, 13614, 17940, 18152, 22690, 27228, 29497, 34035, 35880, 45380, 52187, 54456, 58994, 68070, 88491, 90760, 104374, 117988, 136140, 147485, 156561, 176982, 208748, 235976, 260935, 272280, 294970, 313122, 353964, 417496, 442455, 521870, 589940, 626244, 678431, 707928, 782805, 884910, 1043740, 1179880, 1252488, 1356862, 1565610, 1769820, 2035293, 2087480, 2713724, 3131220, 3392155, 3539640, 4070586, 5427448, 6262440, 6784310, 8141172, 10176465, 13568620, 16282344, 20352930, 27137240, 40705860, 81411720]

約数ペア:

[(1, 81411720), (2, 40705860), (3, 27137240), (4, 20352930), (5, 16282344), (6, 13568620), (8, 10176465), (10, 8141172), (12, 6784310), (13, 6262440), (15, 5427448), (20, 4070586), (23, 3539640), (24, 3392155), (26, 3131220), (30, 2713724), (39, 2087480), (40, 2035293), (46, 1769820), (52, 1565610), (60, 1356862), (65, 1252488), (69, 1179880), (78, 1043740), (92, 884910), (104, 782805), (115, 707928), (120, 678431), (130, 626244), (138, 589940), (156, 521870), (184, 442455), (195, 417496), (230, 353964), (260, 313122), (276, 294970), (299, 272280), (312, 260935), (345, 235976), (390, 208748), (460, 176982), (520, 156561), (552, 147485), (598, 136140), (690, 117988), (780, 104374), (897, 90760), (920, 88491), (1196, 68070), (1380, 58994), (1495, 54456), (1560, 52187), (1794, 45380), (2269, 35880), (2392, 34035), (2760, 29497), (2990, 27228), (3588, 22690), (4485, 18152), (4538, 17940), (5980, 13614), (6807, 11960), (7176, 11345), (8970, 9076)]