25312820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{7489}}^1$

素因数の和:7524

約数の個数: 36

約数和(自身を含む): 57568140

約数和(自身を除く): 32255320

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 7489, 14978, 29956, 37445, 74890, 97357, 149780, 194714, 389428, 486785, 973570, 1265641, 1947140, 2531282, 5062564, 6328205, 12656410, 25312820]

約数ペア:

[(1, 25312820), (2, 12656410), (4, 6328205), (5, 5062564), (10, 2531282), (13, 1947140), (20, 1265641), (26, 973570), (52, 486785), (65, 389428), (130, 194714), (169, 149780), (260, 97357), (338, 74890), (676, 37445), (845, 29956), (1690, 14978), (3380, 7489)]