123355840

素因数分解:

$2^6\times 5^1\times {\mathrm{397}}^1\times {\mathrm{971}}^1$

素因数の和:1385

約数の個数: 56

約数和(自身を含む): 294784272

約数和(自身を除く): 171428432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 397, 794, 971, 1588, 1942, 1985, 3176, 3884, 3970, 4855, 6352, 7768, 7940, 9710, 12704, 15536, 15880, 19420, 25408, 31072, 31760, 38840, 62144, 63520, 77680, 127040, 155360, 310720, 385487, 770974, 1541948, 1927435, 3083896, 3854870, 6167792, 7709740, 12335584, 15419480, 24671168, 30838960, 61677920, 123355840]

約数ペア:

[(1, 123355840), (2, 61677920), (4, 30838960), (5, 24671168), (8, 15419480), (10, 12335584), (16, 7709740), (20, 6167792), (32, 3854870), (40, 3083896), (64, 1927435), (80, 1541948), (160, 770974), (320, 385487), (397, 310720), (794, 155360), (971, 127040), (1588, 77680), (1942, 63520), (1985, 62144), (3176, 38840), (3884, 31760), (3970, 31072), (4855, 25408), (6352, 19420), (7768, 15880), (7940, 15536), (9710, 12704)]