21425880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1109}}^1$

素因数の和:1153

約数の個数: 128

約数和(自身を含む): 76723200

約数和(自身を除く): 55297320

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, 1109, 1288, 1380, 1610, 1932, 2218, 2415, 2760, 3220, 3327, 3864, 4436, 4830, 5545, 6440, 6654, 7763, 8872, 9660, 11090, 13308, 15526, 16635, 19320, 22180, 23289, 25507, 26616, 31052, 33270, 38815, 44360, 46578, 51014, 62104, 66540, 76521, 77630, 93156, 102028, 116445, 127535, 133080, 153042, 155260, 178549, 186312, 204056, 232890, 255070, 306084, 310520, 357098, 382605, 465780, 510140, 535647, 612168, 714196, 765210, 892745, 931560, 1020280, 1071294, 1428392, 1530420, 1785490, 2142588, 2678235, 3060840, 3570980, 4285176, 5356470, 7141960, 10712940, 21425880]

約数ペア:

[(1, 21425880), (2, 10712940), (3, 7141960), (4, 5356470), (5, 4285176), (6, 3570980), (7, 3060840), (8, 2678235), (10, 2142588), (12, 1785490), (14, 1530420), (15, 1428392), (20, 1071294), (21, 1020280), (23, 931560), (24, 892745), (28, 765210), (30, 714196), (35, 612168), (40, 535647), (42, 510140), (46, 465780), (56, 382605), (60, 357098), (69, 310520), (70, 306084), (84, 255070), (92, 232890), (105, 204056), (115, 186312), (120, 178549), (138, 155260), (140, 153042), (161, 133080), (168, 127535), (184, 116445), (210, 102028), (230, 93156), (276, 77630), (280, 76521), (322, 66540), (345, 62104), (420, 51014), (460, 46578), (483, 44360), (552, 38815), (644, 33270), (690, 31052), (805, 26616), (840, 25507), (920, 23289), (966, 22180), (1109, 19320), (1288, 16635), (1380, 15526), (1610, 13308), (1932, 11090), (2218, 9660), (2415, 8872), (2760, 7763), (3220, 6654), (3327, 6440), (3864, 5545), (4436, 4830)]