21167972361

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{401}}^1\times {\mathrm{136403}}^1$

素因数の和:136853

約数の個数: 24

約数和(自身を含む): 31365281376

約数和(自身を除く): 10197309015

約数列:

[1, 3, 9, 43, 129, 387, 401, 1203, 3609, 17243, 51729, 136403, 155187, 409209, 1227627, 5865329, 17595987, 52787961, 54697603, 164092809, 492278427, 2351996929, 7055990787, 21167972361]

約数ペア:

[(1, 21167972361), (3, 7055990787), (9, 2351996929), (43, 492278427), (129, 164092809), (387, 54697603), (401, 52787961), (1203, 17595987), (3609, 5865329), (17243, 1227627), (51729, 409209), (136403, 155187)]