21341985

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{463}}^1$

素因数の和:917

約数の個数: 32

約数和(自身を含む): 39198720

約数和(自身を除く): 17856735

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 439, 463, 1317, 1389, 2195, 2315, 3073, 3241, 6585, 6945, 9219, 9723, 15365, 16205, 46095, 48615, 203257, 609771, 1016285, 1422799, 3048855, 4268397, 7113995, 21341985]

約数ペア:

[(1, 21341985), (3, 7113995), (5, 4268397), (7, 3048855), (15, 1422799), (21, 1016285), (35, 609771), (105, 203257), (439, 48615), (463, 46095), (1317, 16205), (1389, 15365), (2195, 9723), (2315, 9219), (3073, 6945), (3241, 6585)]