20865789

素因数分解:

$3^3\times 7^1\times {\mathrm{113}}^1\times {\mathrm{977}}^1$

素因数の和:1106

約数の個数: 32

約数和(自身を含む): 35677440

約数和(自身を除く): 14811651

約数列:

[1, 3, 7, 9, 21, 27, 63, 113, 189, 339, 791, 977, 1017, 2373, 2931, 3051, 6839, 7119, 8793, 20517, 21357, 26379, 61551, 110401, 184653, 331203, 772807, 993609, 2318421, 2980827, 6955263, 20865789]

約数ペア:

[(1, 20865789), (3, 6955263), (7, 2980827), (9, 2318421), (21, 993609), (27, 772807), (63, 331203), (113, 184653), (189, 110401), (339, 61551), (791, 26379), (977, 21357), (1017, 20517), (2373, 8793), (2931, 7119), (3051, 6839)]