19748961

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{281}}^1$

素因数の和:446

約数の個数: 32

約数和(自身を含む): 31132800

約数和(自身を除く): 11383839

約数列:

[1, 3, 9, 19, 27, 57, 137, 171, 281, 411, 513, 843, 1233, 2529, 2603, 3699, 5339, 7587, 7809, 16017, 23427, 38497, 48051, 70281, 115491, 144153, 346473, 731443, 1039419, 2194329, 6582987, 19748961]

約数ペア:

[(1, 19748961), (3, 6582987), (9, 2194329), (19, 1039419), (27, 731443), (57, 346473), (137, 144153), (171, 115491), (281, 70281), (411, 48051), (513, 38497), (843, 23427), (1233, 16017), (2529, 7809), (2603, 7587), (3699, 5339)]