21819232

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:311

約数の個数: 48

約数和(自身を含む): 44673552

約数和(自身を除く): 22854320

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 101, 157, 172, 202, 314, 344, 404, 628, 688, 808, 1256, 1376, 1616, 2512, 3232, 4343, 5024, 6751, 8686, 13502, 15857, 17372, 27004, 31714, 34744, 54008, 63428, 69488, 108016, 126856, 138976, 216032, 253712, 507424, 681851, 1363702, 2727404, 5454808, 10909616, 21819232]

約数ペア:

[(1, 21819232), (2, 10909616), (4, 5454808), (8, 2727404), (16, 1363702), (32, 681851), (43, 507424), (86, 253712), (101, 216032), (157, 138976), (172, 126856), (202, 108016), (314, 69488), (344, 63428), (404, 54008), (628, 34744), (688, 31714), (808, 27004), (1256, 17372), (1376, 15857), (1616, 13502), (2512, 8686), (3232, 6751), (4343, 5024)]