21860419

素因数分解:

$7^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1$

素因数の和:224

約数の個数: 32

約数和(自身を含む): 28339200

約数和(自身を除く): 6478781

約数列:

[1, 7, 17, 23, 49, 119, 161, 163, 343, 391, 833, 1127, 1141, 2737, 2771, 3749, 5831, 7889, 7987, 19159, 19397, 26243, 55909, 63733, 134113, 135779, 183701, 446131, 950453, 1285907, 3122917, 21860419]

約数ペア:

[(1, 21860419), (7, 3122917), (17, 1285907), (23, 950453), (49, 446131), (119, 183701), (161, 135779), (163, 134113), (343, 63733), (391, 55909), (833, 26243), (1127, 19397), (1141, 19159), (2737, 7987), (2771, 7889), (3749, 5831)]