18995520

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{421}}^1$

素因数の和:488

約数の個数: 112

約数和(自身を含む): 61740288

約数和(自身を除く): 42744768

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 47, 48, 60, 64, 80, 94, 96, 120, 141, 160, 188, 192, 235, 240, 282, 320, 376, 421, 470, 480, 564, 705, 752, 842, 940, 960, 1128, 1263, 1410, 1504, 1684, 1880, 2105, 2256, 2526, 2820, 3008, 3368, 3760, 4210, 4512, 5052, 5640, 6315, 6736, 7520, 8420, 9024, 10104, 11280, 12630, 13472, 15040, 16840, 19787, 20208, 22560, 25260, 26944, 33680, 39574, 40416, 45120, 50520, 59361, 67360, 79148, 80832, 98935, 101040, 118722, 134720, 158296, 197870, 202080, 237444, 296805, 316592, 395740, 404160, 474888, 593610, 633184, 791480, 949776, 1187220, 1266368, 1582960, 1899552, 2374440, 3165920, 3799104, 4748880, 6331840, 9497760, 18995520]

約数ペア:

[(1, 18995520), (2, 9497760), (3, 6331840), (4, 4748880), (5, 3799104), (6, 3165920), (8, 2374440), (10, 1899552), (12, 1582960), (15, 1266368), (16, 1187220), (20, 949776), (24, 791480), (30, 633184), (32, 593610), (40, 474888), (47, 404160), (48, 395740), (60, 316592), (64, 296805), (80, 237444), (94, 202080), (96, 197870), (120, 158296), (141, 134720), (160, 118722), (188, 101040), (192, 98935), (235, 80832), (240, 79148), (282, 67360), (320, 59361), (376, 50520), (421, 45120), (470, 40416), (480, 39574), (564, 33680), (705, 26944), (752, 25260), (842, 22560), (940, 20208), (960, 19787), (1128, 16840), (1263, 15040), (1410, 13472), (1504, 12630), (1684, 11280), (1880, 10104), (2105, 9024), (2256, 8420), (2526, 7520), (2820, 6736), (3008, 6315), (3368, 5640), (3760, 5052), (4210, 4512)]