20629551

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1$

素因数の和:495

約数の個数: 32

約数和(自身を含む): 31173120

約数和(自身を除く): 10543569

約数列:

[1, 3, 17, 23, 43, 51, 69, 129, 391, 409, 731, 989, 1173, 1227, 2193, 2967, 6953, 9407, 16813, 17587, 20859, 28221, 50439, 52761, 159919, 298979, 404501, 479757, 896937, 1213503, 6876517, 20629551]

約数ペア:

[(1, 20629551), (3, 6876517), (17, 1213503), (23, 896937), (43, 479757), (51, 404501), (69, 298979), (129, 159919), (391, 52761), (409, 50439), (731, 28221), (989, 20859), (1173, 17587), (1227, 16813), (2193, 9407), (2967, 6953)]