21287210

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{8219}}^1$

素因数の和:8270

約数の個数: 32

約数和(自身を含む): 44979840

約数和(自身を除く): 23692630

約数列:

[1, 2, 5, 7, 10, 14, 35, 37, 70, 74, 185, 259, 370, 518, 1295, 2590, 8219, 16438, 41095, 57533, 82190, 115066, 287665, 304103, 575330, 608206, 1520515, 2128721, 3041030, 4257442, 10643605, 21287210]

約数ペア:

[(1, 21287210), (2, 10643605), (5, 4257442), (7, 3041030), (10, 2128721), (14, 1520515), (35, 608206), (37, 575330), (70, 304103), (74, 287665), (185, 115066), (259, 82190), (370, 57533), (518, 41095), (1295, 16438), (2590, 8219)]