20178036921

素因数分解:

$3^1\times 7^1\times {\mathrm{431}}^1\times {\mathrm{2229371}}^1$

素因数の和:2229812

約数の個数: 16

約数和(自身を含む): 30818838528

約数和(自身を除く): 10640801607

約数列:

[1, 3, 7, 21, 431, 1293, 3017, 9051, 2229371, 6688113, 15605597, 46816791, 960858901, 2882576703, 6726012307, 20178036921]

約数ペア:

[(1, 20178036921), (3, 6726012307), (7, 2882576703), (21, 960858901), (431, 46816791), (1293, 15605597), (3017, 6688113), (9051, 2229371)]