26406920

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1297}}^1$

素因数の和:1817

約数の個数: 32

約数和(自身を含む): 59578200

約数和(自身を除く): 33171280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 1018, 1297, 2036, 2545, 2594, 4072, 5090, 5188, 6485, 10180, 10376, 12970, 20360, 25940, 51880, 660173, 1320346, 2640692, 3300865, 5281384, 6601730, 13203460, 26406920]

約数ペア:

[(1, 26406920), (2, 13203460), (4, 6601730), (5, 5281384), (8, 3300865), (10, 2640692), (20, 1320346), (40, 660173), (509, 51880), (1018, 25940), (1297, 20360), (2036, 12970), (2545, 10376), (2594, 10180), (4072, 6485), (5090, 5188)]