20905965

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{6733}}^1$

素因数の和:6770

約数の個数: 32

約数和(自身を含む): 38787840

約数和(自身を除く): 17881875

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 207, 345, 621, 1035, 3105, 6733, 20199, 33665, 60597, 100995, 154859, 181791, 302985, 464577, 774295, 908955, 1393731, 2322885, 4181193, 6968655, 20905965]

約数ペア:

[(1, 20905965), (3, 6968655), (5, 4181193), (9, 2322885), (15, 1393731), (23, 908955), (27, 774295), (45, 464577), (69, 302985), (115, 181791), (135, 154859), (207, 100995), (345, 60597), (621, 33665), (1035, 20199), (3105, 6733)]