20647263

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1427}}^1$

素因数の和:1503

約数の個数: 32

約数和(自身を含む): 34546176

約数和(自身を除く): 13898913

約数列:

[1, 3, 7, 13, 21, 39, 53, 91, 159, 273, 371, 689, 1113, 1427, 2067, 4281, 4823, 9989, 14469, 18551, 29967, 55653, 75631, 129857, 226893, 389571, 529417, 983203, 1588251, 2949609, 6882421, 20647263]

約数ペア:

[(1, 20647263), (3, 6882421), (7, 2949609), (13, 1588251), (21, 983203), (39, 529417), (53, 389571), (91, 226893), (159, 129857), (273, 75631), (371, 55653), (689, 29967), (1113, 18551), (1427, 14469), (2067, 9989), (4281, 4823)]