18891395

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{2693}}^1$

素因数の和:2782

約数の個数: 16

約数和(自身を含む): 24052032

約数和(自身を除く): 5160637

約数列:

[1, 5, 23, 61, 115, 305, 1403, 2693, 7015, 13465, 61939, 164273, 309695, 821365, 3778279, 18891395]

約数ペア:

[(1, 18891395), (5, 3778279), (23, 821365), (61, 309695), (115, 164273), (305, 61939), (1403, 13465), (2693, 7015)]