20907417

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{67}}^1$

素因数の和:213

約数の個数: 32

約数和(自身を含む): 30159360

約数和(自身を除く): 9251943

約数列:

[1, 3, 41, 43, 59, 67, 123, 129, 177, 201, 1763, 2419, 2537, 2747, 2881, 3953, 5289, 7257, 7611, 8241, 8643, 11859, 104017, 118121, 162073, 169979, 312051, 354363, 486219, 509937, 6969139, 20907417]

約数ペア:

[(1, 20907417), (3, 6969139), (41, 509937), (43, 486219), (59, 354363), (67, 312051), (123, 169979), (129, 162073), (177, 118121), (201, 104017), (1763, 11859), (2419, 8643), (2537, 8241), (2747, 7611), (2881, 7257), (3953, 5289)]