12975366920

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{637297}}^1$

素因数の和:637817

約数の個数: 32

約数和(自身を含む): 29251978200

約数和(自身を除く): 16276611280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 1018, 2036, 2545, 4072, 5090, 10180, 20360, 637297, 1274594, 2549188, 3186485, 5098376, 6372970, 12745940, 25491880, 324384173, 648768346, 1297536692, 1621920865, 2595073384, 3243841730, 6487683460, 12975366920]

約数ペア:

[(1, 12975366920), (2, 6487683460), (4, 3243841730), (5, 2595073384), (8, 1621920865), (10, 1297536692), (20, 648768346), (40, 324384173), (509, 25491880), (1018, 12745940), (2036, 6372970), (2545, 5098376), (4072, 3186485), (5090, 2549188), (10180, 1274594), (20360, 637297)]