18995744

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{199}}^1$

素因数の和:385

約数の個数: 48

約数和(自身を含む): 39816000

約数和(自身を除く): 20820256

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 152, 157, 199, 304, 314, 398, 608, 628, 796, 1256, 1592, 2512, 2983, 3184, 3781, 5024, 5966, 6368, 7562, 11932, 15124, 23864, 30248, 31243, 47728, 60496, 62486, 95456, 120992, 124972, 249944, 499888, 593617, 999776, 1187234, 2374468, 4748936, 9497872, 18995744]

約数ペア:

[(1, 18995744), (2, 9497872), (4, 4748936), (8, 2374468), (16, 1187234), (19, 999776), (32, 593617), (38, 499888), (76, 249944), (152, 124972), (157, 120992), (199, 95456), (304, 62486), (314, 60496), (398, 47728), (608, 31243), (628, 30248), (796, 23864), (1256, 15124), (1592, 11932), (2512, 7562), (2983, 6368), (3184, 5966), (3781, 5024)]