19937718

素因数分解:

$2^1\times 3^3\times {\mathrm{421}}^1\times {\mathrm{877}}^1$

素因数の和:1309

約数の個数: 32

約数和(自身を含む): 44461920

約数和(自身を除く): 24524202

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 421, 842, 877, 1263, 1754, 2526, 2631, 3789, 5262, 7578, 7893, 11367, 15786, 22734, 23679, 47358, 369217, 738434, 1107651, 2215302, 3322953, 6645906, 9968859, 19937718]

約数ペア:

[(1, 19937718), (2, 9968859), (3, 6645906), (6, 3322953), (9, 2215302), (18, 1107651), (27, 738434), (54, 369217), (421, 47358), (842, 23679), (877, 22734), (1263, 15786), (1754, 11367), (2526, 7893), (2631, 7578), (3789, 5262)]