20291520

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{919}}^1$

素因数の和:962

約数の個数: 112

約数和(自身を含む): 67299840

約数和(自身を除く): 47008320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 32, 40, 46, 48, 60, 64, 69, 80, 92, 96, 115, 120, 138, 160, 184, 192, 230, 240, 276, 320, 345, 368, 460, 480, 552, 690, 736, 919, 920, 960, 1104, 1380, 1472, 1838, 1840, 2208, 2757, 2760, 3676, 3680, 4416, 4595, 5514, 5520, 7352, 7360, 9190, 11028, 11040, 13785, 14704, 18380, 21137, 22056, 22080, 27570, 29408, 36760, 42274, 44112, 55140, 58816, 63411, 73520, 84548, 88224, 105685, 110280, 126822, 147040, 169096, 176448, 211370, 220560, 253644, 294080, 317055, 338192, 422740, 441120, 507288, 634110, 676384, 845480, 882240, 1014576, 1268220, 1352768, 1690960, 2029152, 2536440, 3381920, 4058304, 5072880, 6763840, 10145760, 20291520]

約数ペア:

[(1, 20291520), (2, 10145760), (3, 6763840), (4, 5072880), (5, 4058304), (6, 3381920), (8, 2536440), (10, 2029152), (12, 1690960), (15, 1352768), (16, 1268220), (20, 1014576), (23, 882240), (24, 845480), (30, 676384), (32, 634110), (40, 507288), (46, 441120), (48, 422740), (60, 338192), (64, 317055), (69, 294080), (80, 253644), (92, 220560), (96, 211370), (115, 176448), (120, 169096), (138, 147040), (160, 126822), (184, 110280), (192, 105685), (230, 88224), (240, 84548), (276, 73520), (320, 63411), (345, 58816), (368, 55140), (460, 44112), (480, 42274), (552, 36760), (690, 29408), (736, 27570), (919, 22080), (920, 22056), (960, 21137), (1104, 18380), (1380, 14704), (1472, 13785), (1838, 11040), (1840, 11028), (2208, 9190), (2757, 7360), (2760, 7352), (3676, 5520), (3680, 5514), (4416, 4595)]