20720637

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{6449}}^1$

素因数の和:6482

約数の個数: 32

約数和(自身を含む): 37152000

約数和(自身を除く): 16431363

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 119, 153, 189, 357, 459, 1071, 3213, 6449, 19347, 45143, 58041, 109633, 135429, 174123, 328899, 406287, 767431, 986697, 1218861, 2302293, 2960091, 6906879, 20720637]

約数ペア:

[(1, 20720637), (3, 6906879), (7, 2960091), (9, 2302293), (17, 1218861), (21, 986697), (27, 767431), (51, 406287), (63, 328899), (119, 174123), (153, 135429), (189, 109633), (357, 58041), (459, 45143), (1071, 19347), (3213, 6449)]