21775216

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{863}}^1$

素因数の和:973

約数の個数: 40

約数和(自身を含む): 44997120

約数和(自身を除く): 23221904

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 83, 152, 166, 304, 332, 664, 863, 1328, 1577, 1726, 3154, 3452, 6308, 6904, 12616, 13808, 16397, 25232, 32794, 65588, 71629, 131176, 143258, 262352, 286516, 573032, 1146064, 1360951, 2721902, 5443804, 10887608, 21775216]

約数ペア:

[(1, 21775216), (2, 10887608), (4, 5443804), (8, 2721902), (16, 1360951), (19, 1146064), (38, 573032), (76, 286516), (83, 262352), (152, 143258), (166, 131176), (304, 71629), (332, 65588), (664, 32794), (863, 25232), (1328, 16397), (1577, 13808), (1726, 12616), (3154, 6904), (3452, 6308)]