201920840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:295

約数の個数: 128

約数和(自身を含む): 518745600

約数和(自身を除く): 316824760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 37, 40, 44, 55, 74, 79, 88, 110, 148, 157, 158, 185, 220, 296, 314, 316, 370, 395, 407, 440, 628, 632, 740, 785, 790, 814, 869, 1256, 1480, 1570, 1580, 1628, 1727, 1738, 2035, 2923, 3140, 3160, 3256, 3454, 3476, 4070, 4345, 5809, 5846, 6280, 6908, 6952, 8140, 8635, 8690, 11618, 11692, 12403, 13816, 14615, 16280, 17270, 17380, 23236, 23384, 24806, 29045, 29230, 32153, 34540, 34760, 46472, 49612, 58090, 58460, 62015, 63899, 64306, 69080, 99224, 116180, 116920, 124030, 127798, 128612, 136433, 160765, 232360, 248060, 255596, 257224, 272866, 319495, 321530, 458911, 496120, 511192, 545732, 638990, 643060, 682165, 917822, 1091464, 1277980, 1286120, 1364330, 1835644, 2294555, 2555960, 2728660, 3671288, 4589110, 5048021, 5457320, 9178220, 10096042, 18356440, 20192084, 25240105, 40384168, 50480210, 100960420, 201920840]

約数ペア:

[(1, 201920840), (2, 100960420), (4, 50480210), (5, 40384168), (8, 25240105), (10, 20192084), (11, 18356440), (20, 10096042), (22, 9178220), (37, 5457320), (40, 5048021), (44, 4589110), (55, 3671288), (74, 2728660), (79, 2555960), (88, 2294555), (110, 1835644), (148, 1364330), (157, 1286120), (158, 1277980), (185, 1091464), (220, 917822), (296, 682165), (314, 643060), (316, 638990), (370, 545732), (395, 511192), (407, 496120), (440, 458911), (628, 321530), (632, 319495), (740, 272866), (785, 257224), (790, 255596), (814, 248060), (869, 232360), (1256, 160765), (1480, 136433), (1570, 128612), (1580, 127798), (1628, 124030), (1727, 116920), (1738, 116180), (2035, 99224), (2923, 69080), (3140, 64306), (3160, 63899), (3256, 62015), (3454, 58460), (3476, 58090), (4070, 49612), (4345, 46472), (5809, 34760), (5846, 34540), (6280, 32153), (6908, 29230), (6952, 29045), (8140, 24806), (8635, 23384), (8690, 23236), (11618, 17380), (11692, 17270), (12403, 16280), (13816, 14615)]