20560155

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{2543}}^1$

素因数の和:2576

約数の個数: 48

約数和(自身を含む): 41762304

約数和(自身を除く): 21202149

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 49, 55, 77, 105, 147, 165, 231, 245, 385, 539, 735, 1155, 1617, 2543, 2695, 7629, 8085, 12715, 17801, 27973, 38145, 53403, 83919, 89005, 124607, 139865, 195811, 267015, 373821, 419595, 587433, 623035, 979055, 1370677, 1869105, 2937165, 4112031, 6853385, 20560155]

約数ペア:

[(1, 20560155), (3, 6853385), (5, 4112031), (7, 2937165), (11, 1869105), (15, 1370677), (21, 979055), (33, 623035), (35, 587433), (49, 419595), (55, 373821), (77, 267015), (105, 195811), (147, 139865), (165, 124607), (231, 89005), (245, 83919), (385, 53403), (539, 38145), (735, 27973), (1155, 17801), (1617, 12715), (2543, 8085), (2695, 7629)]