19663791

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:311

約数の個数: 32

約数和(自身を含む): 30916608

約数和(自身を除く): 11252817

約数列:

[1, 3, 7, 21, 73, 101, 127, 219, 303, 381, 511, 707, 889, 1533, 2121, 2667, 7373, 9271, 12827, 22119, 27813, 38481, 51611, 64897, 89789, 154833, 194691, 269367, 936371, 2809113, 6554597, 19663791]

約数ペア:

[(1, 19663791), (3, 6554597), (7, 2809113), (21, 936371), (73, 269367), (101, 194691), (127, 154833), (219, 89789), (303, 64897), (381, 51611), (511, 38481), (707, 27813), (889, 22119), (1533, 12827), (2121, 9271), (2667, 7373)]