217420413

素因数分解:

$3^1\times 7^1\times {\mathrm{443}}^1\times {\mathrm{23371}}^1$

素因数の和:23824

約数の個数: 16

約数和(自身を含む): 332069376

約数和(自身を除く): 114648963

約数列:

[1, 3, 7, 21, 443, 1329, 3101, 9303, 23371, 70113, 163597, 490791, 10353353, 31060059, 72473471, 217420413]

約数ペア:

[(1, 217420413), (3, 72473471), (7, 31060059), (21, 10353353), (443, 490791), (1329, 163597), (3101, 70113), (9303, 23371)]