128963420

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{50773}}^1$

素因数の和:50909

約数の個数: 24

約数和(自身を含む): 272961024

約数和(自身を除く): 143997604

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 50773, 101546, 203092, 253865, 507730, 1015460, 6448171, 12896342, 25792684, 32240855, 64481710, 128963420]

約数ペア:

[(1, 128963420), (2, 64481710), (4, 32240855), (5, 25792684), (10, 12896342), (20, 6448171), (127, 1015460), (254, 507730), (508, 253865), (635, 203092), (1270, 101546), (2540, 50773)]