21903055

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{2029}}^1$

素因数の和:2178

約数の個数: 16

約数和(自身を含む): 28062720

約数和(自身を除く): 6159665

約数列:

[1, 5, 17, 85, 127, 635, 2029, 2159, 10145, 10795, 34493, 172465, 257683, 1288415, 4380611, 21903055]

約数ペア:

[(1, 21903055), (5, 4380611), (17, 1288415), (85, 257683), (127, 172465), (635, 34493), (2029, 10795), (2159, 10145)]