20005881

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{389}}^1$

素因数の和:509

約数の個数: 32

約数和(自身を含む): 31948800

約数和(自身を除く): 11942919

約数列:

[1, 3, 7, 21, 31, 79, 93, 217, 237, 389, 553, 651, 1167, 1659, 2449, 2723, 7347, 8169, 12059, 17143, 30731, 36177, 51429, 84413, 92193, 215117, 253239, 645351, 952661, 2857983, 6668627, 20005881]

約数ペア:

[(1, 20005881), (3, 6668627), (7, 2857983), (21, 952661), (31, 645351), (79, 253239), (93, 215117), (217, 92193), (237, 84413), (389, 51429), (553, 36177), (651, 30731), (1167, 17143), (1659, 12059), (2449, 8169), (2723, 7347)]