20657802

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{251}}^1$

素因数の和:339

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 27242358

約数列:

[1, 2, 3, 6, 11, 22, 29, 33, 43, 58, 66, 86, 87, 129, 174, 251, 258, 319, 473, 502, 638, 753, 946, 957, 1247, 1419, 1506, 1914, 2494, 2761, 2838, 3741, 5522, 7279, 7482, 8283, 10793, 13717, 14558, 16566, 21586, 21837, 27434, 32379, 41151, 43674, 64758, 80069, 82302, 118723, 160138, 237446, 240207, 312997, 356169, 480414, 625994, 712338, 938991, 1877982, 3442967, 6885934, 10328901, 20657802]

約数ペア:

[(1, 20657802), (2, 10328901), (3, 6885934), (6, 3442967), (11, 1877982), (22, 938991), (29, 712338), (33, 625994), (43, 480414), (58, 356169), (66, 312997), (86, 240207), (87, 237446), (129, 160138), (174, 118723), (251, 82302), (258, 80069), (319, 64758), (473, 43674), (502, 41151), (638, 32379), (753, 27434), (946, 21837), (957, 21586), (1247, 16566), (1419, 14558), (1506, 13717), (1914, 10793), (2494, 8283), (2761, 7482), (2838, 7279), (3741, 5522)]