20865843

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1$

素因数の和:217

約数の個数: 40

約数和(自身を含む): 32768736

約数和(自身を除く): 11902893

約数列:

[1, 3, 9, 27, 41, 61, 81, 103, 123, 183, 309, 369, 549, 927, 1107, 1647, 2501, 2781, 3321, 4223, 4941, 6283, 7503, 8343, 12669, 18849, 22509, 38007, 56547, 67527, 114021, 169641, 202581, 257603, 342063, 508923, 772809, 2318427, 6955281, 20865843]

約数ペア:

[(1, 20865843), (3, 6955281), (9, 2318427), (27, 772809), (41, 508923), (61, 342063), (81, 257603), (103, 202581), (123, 169641), (183, 114021), (309, 67527), (369, 56547), (549, 38007), (927, 22509), (1107, 18849), (1647, 12669), (2501, 8343), (2781, 7503), (3321, 6283), (4223, 4941)]