21364665

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{11969}}^1$

素因数の和:12001

約数の個数: 32

約数和(自身を含む): 41368320

約数和(自身を除く): 20003655

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 255, 357, 595, 1785, 11969, 35907, 59845, 83783, 179535, 203473, 251349, 418915, 610419, 1017365, 1256745, 1424311, 3052095, 4272933, 7121555, 21364665]

約数ペア:

[(1, 21364665), (3, 7121555), (5, 4272933), (7, 3052095), (15, 1424311), (17, 1256745), (21, 1017365), (35, 610419), (51, 418915), (85, 251349), (105, 203473), (119, 179535), (255, 83783), (357, 59845), (595, 35907), (1785, 11969)]