13920921

素因数分解:

$3^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{1483}}^1$

素因数の和:1645

約数の個数: 24

約数和(自身を含む): 23150400

約数和(自身を除く): 9229479

約数列:

[1, 3, 7, 9, 21, 63, 149, 447, 1043, 1341, 1483, 3129, 4449, 9387, 10381, 13347, 31143, 93429, 220967, 662901, 1546769, 1988703, 4640307, 13920921]

約数ペア:

[(1, 13920921), (3, 4640307), (7, 1988703), (9, 1546769), (21, 662901), (63, 220967), (149, 93429), (447, 31143), (1043, 13347), (1341, 10381), (1483, 9387), (3129, 4449)]