18929680

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{439}}^1$

素因数の和:477

約数の個数: 120

約数和(自身を含む): 55978560

約数和(自身を除く): 37048880

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 77, 80, 88, 98, 110, 112, 140, 154, 176, 196, 220, 245, 280, 308, 385, 392, 439, 440, 490, 539, 560, 616, 770, 784, 878, 880, 980, 1078, 1232, 1540, 1756, 1960, 2156, 2195, 2695, 3073, 3080, 3512, 3920, 4312, 4390, 4829, 5390, 6146, 6160, 7024, 8624, 8780, 9658, 10780, 12292, 15365, 17560, 19316, 21511, 21560, 24145, 24584, 30730, 33803, 35120, 38632, 43022, 43120, 48290, 49168, 61460, 67606, 77264, 86044, 96580, 107555, 122920, 135212, 169015, 172088, 193160, 215110, 236621, 245840, 270424, 338030, 344176, 386320, 430220, 473242, 540848, 676060, 860440, 946484, 1183105, 1352120, 1720880, 1892968, 2366210, 2704240, 3785936, 4732420, 9464840, 18929680]

約数ペア:

[(1, 18929680), (2, 9464840), (4, 4732420), (5, 3785936), (7, 2704240), (8, 2366210), (10, 1892968), (11, 1720880), (14, 1352120), (16, 1183105), (20, 946484), (22, 860440), (28, 676060), (35, 540848), (40, 473242), (44, 430220), (49, 386320), (55, 344176), (56, 338030), (70, 270424), (77, 245840), (80, 236621), (88, 215110), (98, 193160), (110, 172088), (112, 169015), (140, 135212), (154, 122920), (176, 107555), (196, 96580), (220, 86044), (245, 77264), (280, 67606), (308, 61460), (385, 49168), (392, 48290), (439, 43120), (440, 43022), (490, 38632), (539, 35120), (560, 33803), (616, 30730), (770, 24584), (784, 24145), (878, 21560), (880, 21511), (980, 19316), (1078, 17560), (1232, 15365), (1540, 12292), (1756, 10780), (1960, 9658), (2156, 8780), (2195, 8624), (2695, 7024), (3073, 6160), (3080, 6146), (3512, 5390), (3920, 4829), (4312, 4390)]