18513760

素因数分解:

$2^5\times 5^1\times {\mathrm{251}}^1\times {\mathrm{461}}^1$

素因数の和:727

約数の個数: 48

約数和(自身を含む): 44008272

約数和(自身を除く): 25494512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 251, 461, 502, 922, 1004, 1255, 1844, 2008, 2305, 2510, 3688, 4016, 4610, 5020, 7376, 8032, 9220, 10040, 14752, 18440, 20080, 36880, 40160, 73760, 115711, 231422, 462844, 578555, 925688, 1157110, 1851376, 2314220, 3702752, 4628440, 9256880, 18513760]

約数ペア:

[(1, 18513760), (2, 9256880), (4, 4628440), (5, 3702752), (8, 2314220), (10, 1851376), (16, 1157110), (20, 925688), (32, 578555), (40, 462844), (80, 231422), (160, 115711), (251, 73760), (461, 40160), (502, 36880), (922, 20080), (1004, 18440), (1255, 14752), (1844, 10040), (2008, 9220), (2305, 8032), (2510, 7376), (3688, 5020), (4016, 4610)]