20805525

素因数分解:

$3^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{2371}}^1$

素因数の和:2403

約数の個数: 48

約数和(自身を含む): 41177920

約数和(自身を除く): 20372395

約数列:

[1, 3, 5, 9, 13, 15, 25, 27, 39, 45, 65, 75, 117, 135, 195, 225, 325, 351, 585, 675, 975, 1755, 2371, 2925, 7113, 8775, 11855, 21339, 30823, 35565, 59275, 64017, 92469, 106695, 154115, 177825, 277407, 320085, 462345, 533475, 770575, 832221, 1387035, 1600425, 2311725, 4161105, 6935175, 20805525]

約数ペア:

[(1, 20805525), (3, 6935175), (5, 4161105), (9, 2311725), (13, 1600425), (15, 1387035), (25, 832221), (27, 770575), (39, 533475), (45, 462345), (65, 320085), (75, 277407), (117, 177825), (135, 154115), (195, 106695), (225, 92469), (325, 64017), (351, 59275), (585, 35565), (675, 30823), (975, 21339), (1755, 11855), (2371, 8775), (2925, 7113)]