28927689

素因数分解:

$3^1\times 7^2\times {\mathrm{307}}^1\times {\mathrm{641}}^1$

素因数の和:965

約数の個数: 24

約数和(自身を含む): 45083808

約数和(自身を除く): 16156119

約数列:

[1, 3, 7, 21, 49, 147, 307, 641, 921, 1923, 2149, 4487, 6447, 13461, 15043, 31409, 45129, 94227, 196787, 590361, 1377509, 4132527, 9642563, 28927689]

約数ペア:

[(1, 28927689), (3, 9642563), (7, 4132527), (21, 1377509), (49, 590361), (147, 196787), (307, 94227), (641, 45129), (921, 31409), (1923, 15043), (2149, 13461), (4487, 6447)]