19852640

素因数分解:

$2^5\times 5^1\times {\mathrm{127}}^1\times {\mathrm{977}}^1$

素因数の和:1119

約数の個数: 48

約数和(自身を含む): 47319552

約数和(自身を除く): 27466912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 127, 160, 254, 508, 635, 977, 1016, 1270, 1954, 2032, 2540, 3908, 4064, 4885, 5080, 7816, 9770, 10160, 15632, 19540, 20320, 31264, 39080, 78160, 124079, 156320, 248158, 496316, 620395, 992632, 1240790, 1985264, 2481580, 3970528, 4963160, 9926320, 19852640]

約数ペア:

[(1, 19852640), (2, 9926320), (4, 4963160), (5, 3970528), (8, 2481580), (10, 1985264), (16, 1240790), (20, 992632), (32, 620395), (40, 496316), (80, 248158), (127, 156320), (160, 124079), (254, 78160), (508, 39080), (635, 31264), (977, 20320), (1016, 19540), (1270, 15632), (1954, 10160), (2032, 9770), (2540, 7816), (3908, 5080), (4064, 4885)]