21008515

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{22469}}^1$

素因数の和:22502

約数の個数: 16

約数和(自身を含む): 29121120

約数和(自身を除く): 8112605

約数列:

[1, 5, 11, 17, 55, 85, 187, 935, 22469, 112345, 247159, 381973, 1235795, 1909865, 4201703, 21008515]

約数ペア:

[(1, 21008515), (5, 4201703), (11, 1909865), (17, 1235795), (55, 381973), (85, 247159), (187, 112345), (935, 22469)]