21069840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{347}}^1$

素因数の和:397

約数の個数: 160

約数和(自身を含む): 74566656

約数和(自身を除く): 53496816

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 23, 24, 30, 33, 40, 44, 46, 48, 55, 60, 66, 69, 80, 88, 92, 110, 115, 120, 132, 138, 165, 176, 184, 220, 230, 240, 253, 264, 276, 330, 345, 347, 368, 440, 460, 506, 528, 552, 660, 690, 694, 759, 880, 920, 1012, 1041, 1104, 1265, 1320, 1380, 1388, 1518, 1735, 1840, 2024, 2082, 2530, 2640, 2760, 2776, 3036, 3470, 3795, 3817, 4048, 4164, 5060, 5205, 5520, 5552, 6072, 6940, 7590, 7634, 7981, 8328, 10120, 10410, 11451, 12144, 13880, 15180, 15268, 15962, 16656, 19085, 20240, 20820, 22902, 23943, 27760, 30360, 30536, 31924, 38170, 39905, 41640, 45804, 47886, 57255, 60720, 61072, 63848, 76340, 79810, 83280, 87791, 91608, 95772, 114510, 119715, 127696, 152680, 159620, 175582, 183216, 191544, 229020, 239430, 263373, 305360, 319240, 351164, 383088, 438955, 458040, 478860, 526746, 638480, 702328, 877910, 916080, 957720, 1053492, 1316865, 1404656, 1755820, 1915440, 2106984, 2633730, 3511640, 4213968, 5267460, 7023280, 10534920, 21069840]

約数ペア:

[(1, 21069840), (2, 10534920), (3, 7023280), (4, 5267460), (5, 4213968), (6, 3511640), (8, 2633730), (10, 2106984), (11, 1915440), (12, 1755820), (15, 1404656), (16, 1316865), (20, 1053492), (22, 957720), (23, 916080), (24, 877910), (30, 702328), (33, 638480), (40, 526746), (44, 478860), (46, 458040), (48, 438955), (55, 383088), (60, 351164), (66, 319240), (69, 305360), (80, 263373), (88, 239430), (92, 229020), (110, 191544), (115, 183216), (120, 175582), (132, 159620), (138, 152680), (165, 127696), (176, 119715), (184, 114510), (220, 95772), (230, 91608), (240, 87791), (253, 83280), (264, 79810), (276, 76340), (330, 63848), (345, 61072), (347, 60720), (368, 57255), (440, 47886), (460, 45804), (506, 41640), (528, 39905), (552, 38170), (660, 31924), (690, 30536), (694, 30360), (759, 27760), (880, 23943), (920, 22902), (1012, 20820), (1041, 20240), (1104, 19085), (1265, 16656), (1320, 15962), (1380, 15268), (1388, 15180), (1518, 13880), (1735, 12144), (1840, 11451), (2024, 10410), (2082, 10120), (2530, 8328), (2640, 7981), (2760, 7634), (2776, 7590), (3036, 6940), (3470, 6072), (3795, 5552), (3817, 5520), (4048, 5205), (4164, 5060)]