21131904

素因数分解:

$2^7\times 3^1\times {\mathrm{113}}^1\times {\mathrm{487}}^1$

素因数の和:617

約数の個数: 64

約数和(自身を含む): 56744640

約数和(自身を除く): 35612736

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 113, 128, 192, 226, 339, 384, 452, 487, 678, 904, 974, 1356, 1461, 1808, 1948, 2712, 2922, 3616, 3896, 5424, 5844, 7232, 7792, 10848, 11688, 14464, 15584, 21696, 23376, 31168, 43392, 46752, 55031, 62336, 93504, 110062, 165093, 187008, 220124, 330186, 440248, 660372, 880496, 1320744, 1760992, 2641488, 3521984, 5282976, 7043968, 10565952, 21131904]

約数ペア:

[(1, 21131904), (2, 10565952), (3, 7043968), (4, 5282976), (6, 3521984), (8, 2641488), (12, 1760992), (16, 1320744), (24, 880496), (32, 660372), (48, 440248), (64, 330186), (96, 220124), (113, 187008), (128, 165093), (192, 110062), (226, 93504), (339, 62336), (384, 55031), (452, 46752), (487, 43392), (678, 31168), (904, 23376), (974, 21696), (1356, 15584), (1461, 14464), (1808, 11688), (1948, 10848), (2712, 7792), (2922, 7232), (3616, 5844), (3896, 5424)]