18891691

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{3917}}^1$

素因数の和:3990

約数の個数: 16

約数和(自身を含む): 23696064

約数和(自身を除く): 4804373

約数列:

[1, 7, 13, 53, 91, 371, 689, 3917, 4823, 27419, 50921, 207601, 356447, 1453207, 2698813, 18891691]

約数ペア:

[(1, 18891691), (7, 2698813), (13, 1453207), (53, 356447), (91, 207601), (371, 50921), (689, 27419), (3917, 4823)]