20158389629

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{39761}}^1$

素因数の和:39905

約数の個数: 32

約数和(自身を含む): 24918368256

約数和(自身を除く): 4759978627

約数列:

[1, 7, 23, 47, 67, 161, 329, 469, 1081, 1541, 3149, 7567, 10787, 22043, 39761, 72427, 278327, 506989, 914503, 1868767, 2663987, 6401521, 13081369, 18647909, 42981641, 61271701, 125207389, 300871487, 428901907, 876451723, 2879769947, 20158389629]

約数ペア:

[(1, 20158389629), (7, 2879769947), (23, 876451723), (47, 428901907), (67, 300871487), (161, 125207389), (329, 61271701), (469, 42981641), (1081, 18647909), (1541, 13081369), (3149, 6401521), (7567, 2663987), (10787, 1868767), (22043, 914503), (39761, 506989), (72427, 278327)]