138727280

素因数分解:

$2^4\times 5^1\times {\mathrm{1039}}^1\times {\mathrm{1669}}^1$

素因数の和:2721

約数の個数: 40

約数和(自身を含む): 323044800

約数和(自身を除く): 184317520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1039, 1669, 2078, 3338, 4156, 5195, 6676, 8312, 8345, 10390, 13352, 16624, 16690, 20780, 26704, 33380, 41560, 66760, 83120, 133520, 1734091, 3468182, 6936364, 8670455, 13872728, 17340910, 27745456, 34681820, 69363640, 138727280]

約数ペア:

[(1, 138727280), (2, 69363640), (4, 34681820), (5, 27745456), (8, 17340910), (10, 13872728), (16, 8670455), (20, 6936364), (40, 3468182), (80, 1734091), (1039, 133520), (1669, 83120), (2078, 66760), (3338, 41560), (4156, 33380), (5195, 26704), (6676, 20780), (8312, 16690), (8345, 16624), (10390, 13352)]