20408965174

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{653}}^1\times {\mathrm{991}}^1\times {\mathrm{1213}}^1$

素因数の和:2872

約数の個数: 32

約数和(自身を含む): 33079382784

約数和(自身を除く): 12670417610

約数列:

[1, 2, 13, 26, 653, 991, 1213, 1306, 1982, 2426, 8489, 12883, 15769, 16978, 25766, 31538, 647123, 792089, 1202083, 1294246, 1584178, 2404166, 8412599, 10297157, 15627079, 16825198, 20594314, 31254158, 784960199, 1569920398, 10204482587, 20408965174]

約数ペア:

[(1, 20408965174), (2, 10204482587), (13, 1569920398), (26, 784960199), (653, 31254158), (991, 20594314), (1213, 16825198), (1306, 15627079), (1982, 10297157), (2426, 8412599), (8489, 2404166), (12883, 1584178), (15769, 1294246), (16978, 1202083), (25766, 792089), (31538, 647123)]