18621720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1$

素因数の和:226

約数の個数: 192

約数和(自身を含む): 68402880

約数和(自身を除く): 49781160

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 23, 24, 26, 30, 36, 39, 40, 45, 46, 52, 60, 65, 69, 72, 78, 90, 92, 104, 115, 117, 120, 130, 138, 156, 173, 180, 184, 195, 207, 230, 234, 260, 276, 299, 312, 345, 346, 360, 390, 414, 460, 468, 519, 520, 552, 585, 598, 690, 692, 780, 828, 865, 897, 920, 936, 1035, 1038, 1170, 1196, 1380, 1384, 1495, 1557, 1560, 1656, 1730, 1794, 2070, 2076, 2249, 2340, 2392, 2595, 2691, 2760, 2990, 3114, 3460, 3588, 3979, 4140, 4152, 4485, 4498, 4680, 5190, 5382, 5980, 6228, 6747, 6920, 7176, 7785, 7958, 8280, 8970, 8996, 10380, 10764, 11245, 11937, 11960, 12456, 13455, 13494, 15570, 15916, 17940, 17992, 19895, 20241, 20760, 21528, 22490, 23874, 26910, 26988, 31140, 31832, 33735, 35811, 35880, 39790, 40482, 44980, 47748, 51727, 53820, 53976, 59685, 62280, 67470, 71622, 79580, 80964, 89960, 95496, 101205, 103454, 107640, 119370, 134940, 143244, 155181, 159160, 161928, 179055, 202410, 206908, 238740, 258635, 269880, 286488, 310362, 358110, 404820, 413816, 465543, 477480, 517270, 620724, 716220, 775905, 809640, 931086, 1034540, 1241448, 1432440, 1551810, 1862172, 2069080, 2327715, 3103620, 3724344, 4655430, 6207240, 9310860, 18621720]

約数ペア:

[(1, 18621720), (2, 9310860), (3, 6207240), (4, 4655430), (5, 3724344), (6, 3103620), (8, 2327715), (9, 2069080), (10, 1862172), (12, 1551810), (13, 1432440), (15, 1241448), (18, 1034540), (20, 931086), (23, 809640), (24, 775905), (26, 716220), (30, 620724), (36, 517270), (39, 477480), (40, 465543), (45, 413816), (46, 404820), (52, 358110), (60, 310362), (65, 286488), (69, 269880), (72, 258635), (78, 238740), (90, 206908), (92, 202410), (104, 179055), (115, 161928), (117, 159160), (120, 155181), (130, 143244), (138, 134940), (156, 119370), (173, 107640), (180, 103454), (184, 101205), (195, 95496), (207, 89960), (230, 80964), (234, 79580), (260, 71622), (276, 67470), (299, 62280), (312, 59685), (345, 53976), (346, 53820), (360, 51727), (390, 47748), (414, 44980), (460, 40482), (468, 39790), (519, 35880), (520, 35811), (552, 33735), (585, 31832), (598, 31140), (690, 26988), (692, 26910), (780, 23874), (828, 22490), (865, 21528), (897, 20760), (920, 20241), (936, 19895), (1035, 17992), (1038, 17940), (1170, 15916), (1196, 15570), (1380, 13494), (1384, 13455), (1495, 12456), (1557, 11960), (1560, 11937), (1656, 11245), (1730, 10764), (1794, 10380), (2070, 8996), (2076, 8970), (2249, 8280), (2340, 7958), (2392, 7785), (2595, 7176), (2691, 6920), (2760, 6747), (2990, 6228), (3114, 5980), (3460, 5382), (3588, 5190), (3979, 4680), (4140, 4498), (4152, 4485)]