21617895

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{1879}}^1$

素因数の和:1959

約数の個数: 32

約数和(自身を含む): 37900800

約数和(自身を除く): 16282905

約数列:

[1, 3, 5, 13, 15, 39, 59, 65, 177, 195, 295, 767, 885, 1879, 2301, 3835, 5637, 9395, 11505, 24427, 28185, 73281, 110861, 122135, 332583, 366405, 554305, 1441193, 1662915, 4323579, 7205965, 21617895]

約数ペア:

[(1, 21617895), (3, 7205965), (5, 4323579), (13, 1662915), (15, 1441193), (39, 554305), (59, 366405), (65, 332583), (177, 122135), (195, 110861), (295, 73281), (767, 28185), (885, 24427), (1879, 11505), (2301, 9395), (3835, 5637)]