21890512

素因数分解:

$2^4\times 7^1\times {\mathrm{241}}^1\times {\mathrm{811}}^1$

素因数の和:1067

約数の個数: 40

約数和(自身を含む): 48732992

約数和(自身を除く): 26842480

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 241, 482, 811, 964, 1622, 1687, 1928, 3244, 3374, 3856, 5677, 6488, 6748, 11354, 12976, 13496, 22708, 26992, 45416, 90832, 195451, 390902, 781804, 1368157, 1563608, 2736314, 3127216, 5472628, 10945256, 21890512]

約数ペア:

[(1, 21890512), (2, 10945256), (4, 5472628), (7, 3127216), (8, 2736314), (14, 1563608), (16, 1368157), (28, 781804), (56, 390902), (112, 195451), (241, 90832), (482, 45416), (811, 26992), (964, 22708), (1622, 13496), (1687, 12976), (1928, 11354), (3244, 6748), (3374, 6488), (3856, 5677)]