18891776

素因数分解:

$2^{10}\times {\mathrm{19}}^1\times {\mathrm{971}}^1$

素因数の和:1010

約数の個数: 44

約数和(自身を含む): 39793680

約数和(自身を除く): 20901904

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 256, 304, 512, 608, 971, 1024, 1216, 1942, 2432, 3884, 4864, 7768, 9728, 15536, 18449, 19456, 31072, 36898, 62144, 73796, 124288, 147592, 248576, 295184, 497152, 590368, 994304, 1180736, 2361472, 4722944, 9445888, 18891776]

約数ペア:

[(1, 18891776), (2, 9445888), (4, 4722944), (8, 2361472), (16, 1180736), (19, 994304), (32, 590368), (38, 497152), (64, 295184), (76, 248576), (128, 147592), (152, 124288), (256, 73796), (304, 62144), (512, 36898), (608, 31072), (971, 19456), (1024, 18449), (1216, 15536), (1942, 9728), (2432, 7768), (3884, 4864)]