20890162105

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{317}}^1\times {\mathrm{491}}^1\times {\mathrm{1579}}^1$

素因数の和:2409

約数の個数: 32

約数和(自身を含む): 26697651840

約数和(自身を除く): 5807489735

約数列:

[1, 5, 17, 85, 317, 491, 1579, 1585, 2455, 5389, 7895, 8347, 26843, 26945, 41735, 134215, 155647, 500543, 775289, 778235, 2502715, 2645999, 3876445, 8509231, 13179913, 13229995, 42546155, 65899565, 245766613, 1228833065, 4178032421, 20890162105]

約数ペア:

[(1, 20890162105), (5, 4178032421), (17, 1228833065), (85, 245766613), (317, 65899565), (491, 42546155), (1579, 13229995), (1585, 13179913), (2455, 8509231), (5389, 3876445), (7895, 2645999), (8347, 2502715), (26843, 778235), (26945, 775289), (41735, 500543), (134215, 155647)]