20195847

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{173}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 35830080

約数和(自身を除く): 15634233

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 109, 119, 153, 173, 327, 357, 519, 763, 981, 1071, 1211, 1557, 1853, 2289, 2941, 3633, 5559, 6867, 8823, 10899, 12971, 16677, 18857, 20587, 26469, 38913, 56571, 61761, 116739, 131999, 169713, 185283, 320569, 395997, 961707, 1187991, 2243983, 2885121, 6731949, 20195847]

約数ペア:

[(1, 20195847), (3, 6731949), (7, 2885121), (9, 2243983), (17, 1187991), (21, 961707), (51, 395997), (63, 320569), (109, 185283), (119, 169713), (153, 131999), (173, 116739), (327, 61761), (357, 56571), (519, 38913), (763, 26469), (981, 20587), (1071, 18857), (1211, 16677), (1557, 12971), (1853, 10899), (2289, 8823), (2941, 6867), (3633, 5559)]