21009603

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{17911}}^1$

素因数の和:17954

約数の個数: 16

約数和(自身を含む): 30951936

約数和(自身を除く): 9942333

約数列:

[1, 3, 17, 23, 51, 69, 391, 1173, 17911, 53733, 304487, 411953, 913461, 1235859, 7003201, 21009603]

約数ペア:

[(1, 21009603), (3, 7003201), (17, 1235859), (23, 913461), (51, 411953), (69, 304487), (391, 53733), (1173, 17911)]