19725720

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1021}}^1$

素因数の和:1065

約数の個数: 128

約数和(自身を含む): 70640640

約数和(自身を除く): 50914920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 23, 24, 28, 30, 35, 40, 42, 46, 56, 60, 69, 70, 84, 92, 105, 115, 120, 138, 140, 161, 168, 184, 210, 230, 276, 280, 322, 345, 420, 460, 483, 552, 644, 690, 805, 840, 920, 966, 1021, 1288, 1380, 1610, 1932, 2042, 2415, 2760, 3063, 3220, 3864, 4084, 4830, 5105, 6126, 6440, 7147, 8168, 9660, 10210, 12252, 14294, 15315, 19320, 20420, 21441, 23483, 24504, 28588, 30630, 35735, 40840, 42882, 46966, 57176, 61260, 70449, 71470, 85764, 93932, 107205, 117415, 122520, 140898, 142940, 164381, 171528, 187864, 214410, 234830, 281796, 285880, 328762, 352245, 428820, 469660, 493143, 563592, 657524, 704490, 821905, 857640, 939320, 986286, 1315048, 1408980, 1643810, 1972572, 2465715, 2817960, 3287620, 3945144, 4931430, 6575240, 9862860, 19725720]

約数ペア:

[(1, 19725720), (2, 9862860), (3, 6575240), (4, 4931430), (5, 3945144), (6, 3287620), (7, 2817960), (8, 2465715), (10, 1972572), (12, 1643810), (14, 1408980), (15, 1315048), (20, 986286), (21, 939320), (23, 857640), (24, 821905), (28, 704490), (30, 657524), (35, 563592), (40, 493143), (42, 469660), (46, 428820), (56, 352245), (60, 328762), (69, 285880), (70, 281796), (84, 234830), (92, 214410), (105, 187864), (115, 171528), (120, 164381), (138, 142940), (140, 140898), (161, 122520), (168, 117415), (184, 107205), (210, 93932), (230, 85764), (276, 71470), (280, 70449), (322, 61260), (345, 57176), (420, 46966), (460, 42882), (483, 40840), (552, 35735), (644, 30630), (690, 28588), (805, 24504), (840, 23483), (920, 21441), (966, 20420), (1021, 19320), (1288, 15315), (1380, 14294), (1610, 12252), (1932, 10210), (2042, 9660), (2415, 8168), (2760, 7147), (3063, 6440), (3220, 6126), (3864, 5105), (4084, 4830)]