20515011

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{151}}^1\times {\mathrm{179}}^1$

素因数の和:367

約数の個数: 32

約数和(自身を含む): 31518720

約数和(自身を除く): 11003709

約数列:

[1, 3, 11, 23, 33, 69, 151, 179, 253, 453, 537, 759, 1661, 1969, 3473, 4117, 4983, 5907, 10419, 12351, 27029, 38203, 45287, 81087, 114609, 135861, 297319, 621667, 891957, 1865001, 6838337, 20515011]

約数ペア:

[(1, 20515011), (3, 6838337), (11, 1865001), (23, 891957), (33, 621667), (69, 297319), (151, 135861), (179, 114609), (253, 81087), (453, 45287), (537, 38203), (759, 27029), (1661, 12351), (1969, 10419), (3473, 5907), (4117, 4983)]