27981380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{269}}^1\times {\mathrm{743}}^1$

素因数の和:1028

約数の個数: 48

約数和(自身を含む): 67495680

約数和(自身を除く): 39514300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 269, 538, 743, 1076, 1345, 1486, 1883, 2690, 2972, 3715, 3766, 5201, 5380, 7430, 7532, 9415, 10402, 14860, 18830, 20804, 26005, 37660, 52010, 104020, 199867, 399734, 799468, 999335, 1399069, 1998670, 2798138, 3997340, 5596276, 6995345, 13990690, 27981380]

約数ペア:

[(1, 27981380), (2, 13990690), (4, 6995345), (5, 5596276), (7, 3997340), (10, 2798138), (14, 1998670), (20, 1399069), (28, 999335), (35, 799468), (70, 399734), (140, 199867), (269, 104020), (538, 52010), (743, 37660), (1076, 26005), (1345, 20804), (1486, 18830), (1883, 14860), (2690, 10402), (2972, 9415), (3715, 7532), (3766, 7430), (5201, 5380)]