20677371

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{307}}^1$

素因数の和:491

約数の個数: 32

約数和(自身を含む): 32702208

約数和(自身を除く): 12024837

約数列:

[1, 3, 11, 13, 33, 39, 143, 157, 307, 429, 471, 921, 1727, 2041, 3377, 3991, 5181, 6123, 10131, 11973, 22451, 43901, 48199, 67353, 131703, 144597, 530189, 626587, 1590567, 1879761, 6892457, 20677371]

約数ペア:

[(1, 20677371), (3, 6892457), (11, 1879761), (13, 1590567), (33, 626587), (39, 530189), (143, 144597), (157, 131703), (307, 67353), (429, 48199), (471, 43901), (921, 22451), (1727, 11973), (2041, 10131), (3377, 6123), (3991, 5181)]