21516960

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1949}}^1$

素因数の和:1990

約数の個数: 96

約数和(自身を含む): 70761600

約数和(自身を除く): 49244640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 32, 40, 46, 48, 60, 69, 80, 92, 96, 115, 120, 138, 160, 184, 230, 240, 276, 345, 368, 460, 480, 552, 690, 736, 920, 1104, 1380, 1840, 1949, 2208, 2760, 3680, 3898, 5520, 5847, 7796, 9745, 11040, 11694, 15592, 19490, 23388, 29235, 31184, 38980, 44827, 46776, 58470, 62368, 77960, 89654, 93552, 116940, 134481, 155920, 179308, 187104, 224135, 233880, 268962, 311840, 358616, 448270, 467760, 537924, 672405, 717232, 896540, 935520, 1075848, 1344810, 1434464, 1793080, 2151696, 2689620, 3586160, 4303392, 5379240, 7172320, 10758480, 21516960]

約数ペア:

[(1, 21516960), (2, 10758480), (3, 7172320), (4, 5379240), (5, 4303392), (6, 3586160), (8, 2689620), (10, 2151696), (12, 1793080), (15, 1434464), (16, 1344810), (20, 1075848), (23, 935520), (24, 896540), (30, 717232), (32, 672405), (40, 537924), (46, 467760), (48, 448270), (60, 358616), (69, 311840), (80, 268962), (92, 233880), (96, 224135), (115, 187104), (120, 179308), (138, 155920), (160, 134481), (184, 116940), (230, 93552), (240, 89654), (276, 77960), (345, 62368), (368, 58470), (460, 46776), (480, 44827), (552, 38980), (690, 31184), (736, 29235), (920, 23388), (1104, 19490), (1380, 15592), (1840, 11694), (1949, 11040), (2208, 9745), (2760, 7796), (3680, 5847), (3898, 5520)]