18518220

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:122

約数の個数: 240

約数和(自身を含む): 70253568

約数和(自身を除く): 51735348

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 23, 27, 28, 30, 35, 36, 42, 45, 46, 54, 60, 63, 69, 70, 71, 81, 84, 90, 92, 105, 108, 115, 126, 135, 138, 140, 142, 161, 162, 180, 189, 207, 210, 213, 230, 252, 270, 276, 284, 315, 322, 324, 345, 355, 378, 405, 414, 420, 426, 460, 483, 497, 540, 567, 621, 630, 639, 644, 690, 710, 756, 805, 810, 828, 852, 945, 966, 994, 1035, 1065, 1134, 1242, 1260, 1278, 1380, 1420, 1449, 1491, 1610, 1620, 1633, 1863, 1890, 1917, 1932, 1988, 2070, 2130, 2268, 2415, 2484, 2485, 2556, 2835, 2898, 2982, 3105, 3195, 3220, 3266, 3726, 3780, 3834, 4140, 4260, 4347, 4473, 4830, 4899, 4970, 5670, 5751, 5796, 5964, 6210, 6390, 6532, 7245, 7452, 7455, 7668, 8165, 8694, 8946, 9315, 9585, 9660, 9798, 9940, 11340, 11431, 11502, 12420, 12780, 13041, 13419, 14490, 14697, 14910, 16330, 17388, 17892, 18630, 19170, 19596, 21735, 22365, 22862, 23004, 24495, 26082, 26838, 28755, 28980, 29394, 29820, 32660, 34293, 37260, 38340, 40257, 43470, 44091, 44730, 45724, 48990, 52164, 53676, 57155, 57510, 58788, 65205, 67095, 68586, 73485, 80514, 86940, 88182, 89460, 97980, 102879, 114310, 115020, 130410, 132273, 134190, 137172, 146970, 161028, 171465, 176364, 201285, 205758, 220455, 228620, 260820, 264546, 268380, 293940, 308637, 342930, 402570, 411516, 440910, 514395, 529092, 617274, 661365, 685860, 805140, 881820, 925911, 1028790, 1234548, 1322730, 1543185, 1851822, 2057580, 2645460, 3086370, 3703644, 4629555, 6172740, 9259110, 18518220]

約数ペア:

[(1, 18518220), (2, 9259110), (3, 6172740), (4, 4629555), (5, 3703644), (6, 3086370), (7, 2645460), (9, 2057580), (10, 1851822), (12, 1543185), (14, 1322730), (15, 1234548), (18, 1028790), (20, 925911), (21, 881820), (23, 805140), (27, 685860), (28, 661365), (30, 617274), (35, 529092), (36, 514395), (42, 440910), (45, 411516), (46, 402570), (54, 342930), (60, 308637), (63, 293940), (69, 268380), (70, 264546), (71, 260820), (81, 228620), (84, 220455), (90, 205758), (92, 201285), (105, 176364), (108, 171465), (115, 161028), (126, 146970), (135, 137172), (138, 134190), (140, 132273), (142, 130410), (161, 115020), (162, 114310), (180, 102879), (189, 97980), (207, 89460), (210, 88182), (213, 86940), (230, 80514), (252, 73485), (270, 68586), (276, 67095), (284, 65205), (315, 58788), (322, 57510), (324, 57155), (345, 53676), (355, 52164), (378, 48990), (405, 45724), (414, 44730), (420, 44091), (426, 43470), (460, 40257), (483, 38340), (497, 37260), (540, 34293), (567, 32660), (621, 29820), (630, 29394), (639, 28980), (644, 28755), (690, 26838), (710, 26082), (756, 24495), (805, 23004), (810, 22862), (828, 22365), (852, 21735), (945, 19596), (966, 19170), (994, 18630), (1035, 17892), (1065, 17388), (1134, 16330), (1242, 14910), (1260, 14697), (1278, 14490), (1380, 13419), (1420, 13041), (1449, 12780), (1491, 12420), (1610, 11502), (1620, 11431), (1633, 11340), (1863, 9940), (1890, 9798), (1917, 9660), (1932, 9585), (1988, 9315), (2070, 8946), (2130, 8694), (2268, 8165), (2415, 7668), (2484, 7455), (2485, 7452), (2556, 7245), (2835, 6532), (2898, 6390), (2982, 6210), (3105, 5964), (3195, 5796), (3220, 5751), (3266, 5670), (3726, 4970), (3780, 4899), (3834, 4830), (4140, 4473), (4260, 4347)]