19804408

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{997}}^1$

素因数の和:1207

約数の個数: 32

約数和(自身を含む): 40239360

約数和(自身を除く): 20434952

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 191, 382, 764, 997, 1528, 1994, 2483, 3988, 4966, 7976, 9932, 12961, 19864, 25922, 51844, 103688, 190427, 380854, 761708, 1523416, 2475551, 4951102, 9902204, 19804408]

約数ペア:

[(1, 19804408), (2, 9902204), (4, 4951102), (8, 2475551), (13, 1523416), (26, 761708), (52, 380854), (104, 190427), (191, 103688), (382, 51844), (764, 25922), (997, 19864), (1528, 12961), (1994, 9932), (2483, 7976), (3988, 4966)]