21375885

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{4931}}^1$

素因数の和:4973

約数の個数: 24

約数和(自身を含む): 36338976

約数和(自身を除く): 14963091

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 289, 867, 1445, 4335, 4931, 14793, 24655, 73965, 83827, 251481, 419135, 1257405, 1425059, 4275177, 7125295, 21375885]

約数ペア:

[(1, 21375885), (3, 7125295), (5, 4275177), (15, 1425059), (17, 1257405), (51, 419135), (85, 251481), (255, 83827), (289, 73965), (867, 24655), (1445, 14793), (4335, 4931)]