20693205

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{907}}^1$

素因数の和:947

約数の個数: 48

約数和(自身を含む): 39879360

約数和(自身を除く): 19186155

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 169, 195, 351, 507, 585, 845, 907, 1521, 1755, 2535, 2721, 4535, 4563, 7605, 8163, 11791, 13605, 22815, 24489, 35373, 40815, 58955, 106119, 122445, 153283, 176865, 318357, 459849, 530595, 766415, 1379547, 1591785, 2299245, 4138641, 6897735, 20693205]

約数ペア:

[(1, 20693205), (3, 6897735), (5, 4138641), (9, 2299245), (13, 1591785), (15, 1379547), (27, 766415), (39, 530595), (45, 459849), (65, 318357), (117, 176865), (135, 153283), (169, 122445), (195, 106119), (351, 58955), (507, 40815), (585, 35373), (845, 24489), (907, 22815), (1521, 13605), (1755, 11791), (2535, 8163), (2721, 7605), (4535, 4563)]