21443840

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1523}}^1$

素因数の和:1555

約数の個数: 72

約数和(自身を含む): 56071008

約数和(自身を除く): 34627168

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 440, 640, 704, 880, 1280, 1408, 1523, 1760, 2816, 3046, 3520, 6092, 7040, 7615, 12184, 14080, 15230, 16753, 24368, 30460, 33506, 48736, 60920, 67012, 83765, 97472, 121840, 134024, 167530, 194944, 243680, 268048, 335060, 389888, 487360, 536096, 670120, 974720, 1072192, 1340240, 1949440, 2144384, 2680480, 4288768, 5360960, 10721920, 21443840]

約数ペア:

[(1, 21443840), (2, 10721920), (4, 5360960), (5, 4288768), (8, 2680480), (10, 2144384), (11, 1949440), (16, 1340240), (20, 1072192), (22, 974720), (32, 670120), (40, 536096), (44, 487360), (55, 389888), (64, 335060), (80, 268048), (88, 243680), (110, 194944), (128, 167530), (160, 134024), (176, 121840), (220, 97472), (256, 83765), (320, 67012), (352, 60920), (440, 48736), (640, 33506), (704, 30460), (880, 24368), (1280, 16753), (1408, 15230), (1523, 14080), (1760, 12184), (2816, 7615), (3046, 7040), (3520, 6092)]