20717235

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1993}}^1$

素因数の和:2025

約数の個数: 64

約数和(自身を含む): 45941760

約数和(自身を除く): 25224525

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 27, 33, 35, 45, 55, 63, 77, 99, 105, 135, 165, 189, 231, 297, 315, 385, 495, 693, 945, 1155, 1485, 1993, 2079, 3465, 5979, 9965, 10395, 13951, 17937, 21923, 29895, 41853, 53811, 65769, 69755, 89685, 109615, 125559, 153461, 197307, 209265, 269055, 328845, 376677, 460383, 591921, 627795, 767305, 986535, 1381149, 1883385, 2301915, 2959605, 4143447, 6905745, 20717235]

約数ペア:

[(1, 20717235), (3, 6905745), (5, 4143447), (7, 2959605), (9, 2301915), (11, 1883385), (15, 1381149), (21, 986535), (27, 767305), (33, 627795), (35, 591921), (45, 460383), (55, 376677), (63, 328845), (77, 269055), (99, 209265), (105, 197307), (135, 153461), (165, 125559), (189, 109615), (231, 89685), (297, 69755), (315, 65769), (385, 53811), (495, 41853), (693, 29895), (945, 21923), (1155, 17937), (1485, 13951), (1993, 10395), (2079, 9965), (3465, 5979)]