21032320

素因数分解:

$2^7\times 5^1\times {\mathrm{59}}^1\times {\mathrm{557}}^1$

素因数の和:635

約数の個数: 64

約数和(自身を含む): 51224400

約数和(自身を除く): 30192080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 59, 64, 80, 118, 128, 160, 236, 295, 320, 472, 557, 590, 640, 944, 1114, 1180, 1888, 2228, 2360, 2785, 3776, 4456, 4720, 5570, 7552, 8912, 9440, 11140, 17824, 18880, 22280, 32863, 35648, 37760, 44560, 65726, 71296, 89120, 131452, 164315, 178240, 262904, 328630, 356480, 525808, 657260, 1051616, 1314520, 2103232, 2629040, 4206464, 5258080, 10516160, 21032320]

約数ペア:

[(1, 21032320), (2, 10516160), (4, 5258080), (5, 4206464), (8, 2629040), (10, 2103232), (16, 1314520), (20, 1051616), (32, 657260), (40, 525808), (59, 356480), (64, 328630), (80, 262904), (118, 178240), (128, 164315), (160, 131452), (236, 89120), (295, 71296), (320, 65726), (472, 44560), (557, 37760), (590, 35648), (640, 32863), (944, 22280), (1114, 18880), (1180, 17824), (1888, 11140), (2228, 9440), (2360, 8912), (2785, 7552), (3776, 5570), (4456, 4720)]