21408783

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{8887}}^1$

素因数の和:8974

約数の個数: 16

約数和(自身を含む): 31570176

約数和(自身を除く): 10161393

約数列:

[1, 3, 11, 33, 73, 219, 803, 2409, 8887, 26661, 97757, 293271, 648751, 1946253, 7136261, 21408783]

約数ペア:

[(1, 21408783), (3, 7136261), (11, 1946253), (33, 648751), (73, 293271), (219, 97757), (803, 26661), (2409, 8887)]