19889971840

素因数分解:

$2^7\times 5^1\times {\mathrm{6917}}^1\times {\mathrm{4493}}^1$

素因数の和:11429

約数の個数: 64

約数和(自身を含む): 47566922760

約数和(自身を除く): 27676950920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 4493, 6917, 8986, 13834, 17972, 22465, 27668, 34585, 35944, 44930, 55336, 69170, 71888, 89860, 110672, 138340, 143776, 179720, 221344, 276680, 287552, 359440, 442688, 553360, 575104, 718880, 885376, 1106720, 1437760, 2213440, 2875520, 4426880, 31078081, 62156162, 124312324, 155390405, 248624648, 310780810, 497249296, 621561620, 994498592, 1243123240, 1988997184, 2486246480, 3977994368, 4972492960, 9944985920, 19889971840]

約数ペア:

[(1, 19889971840), (2, 9944985920), (4, 4972492960), (5, 3977994368), (8, 2486246480), (10, 1988997184), (16, 1243123240), (20, 994498592), (32, 621561620), (40, 497249296), (64, 310780810), (80, 248624648), (128, 155390405), (160, 124312324), (320, 62156162), (640, 31078081), (4493, 4426880), (6917, 2875520), (8986, 2213440), (13834, 1437760), (17972, 1106720), (22465, 885376), (27668, 718880), (34585, 575104), (35944, 553360), (44930, 442688), (55336, 359440), (69170, 287552), (71888, 276680), (89860, 221344), (110672, 179720), (138340, 143776)]