19721464

素因数分解:

$2^3\times 7^1\times {\mathrm{83}}^1\times {\mathrm{4243}}^1$

素因数の和:4339

約数の個数: 32

約数和(自身を含む): 42779520

約数和(自身を除く): 23058056

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 83, 166, 332, 581, 664, 1162, 2324, 4243, 4648, 8486, 16972, 29701, 33944, 59402, 118804, 237608, 352169, 704338, 1408676, 2465183, 2817352, 4930366, 9860732, 19721464]

約数ペア:

[(1, 19721464), (2, 9860732), (4, 4930366), (7, 2817352), (8, 2465183), (14, 1408676), (28, 704338), (56, 352169), (83, 237608), (166, 118804), (332, 59402), (581, 33944), (664, 29701), (1162, 16972), (2324, 8486), (4243, 4648)]