19971885

素因数分解:

$3^1\times 5^1\times {\mathrm{307}}^1\times {\mathrm{4337}}^1$

素因数の和:4652

約数の個数: 16

約数和(自身を含む): 32066496

約数和(自身を除く): 12094611

約数列:

[1, 3, 5, 15, 307, 921, 1535, 4337, 4605, 13011, 21685, 65055, 1331459, 3994377, 6657295, 19971885]

約数ペア:

[(1, 19971885), (3, 6657295), (5, 3994377), (15, 1331459), (307, 65055), (921, 21685), (1535, 13011), (4337, 4605)]