21875080

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{269}}^1$

素因数の和:406

約数の個数: 64

約数和(自身を含む): 52488000

約数和(自身を除く): 30612920

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 107, 152, 190, 214, 269, 380, 428, 535, 538, 760, 856, 1070, 1076, 1345, 2033, 2140, 2152, 2690, 4066, 4280, 5111, 5380, 8132, 10165, 10222, 10760, 16264, 20330, 20444, 25555, 28783, 40660, 40888, 51110, 57566, 81320, 102220, 115132, 143915, 204440, 230264, 287830, 546877, 575660, 1093754, 1151320, 2187508, 2734385, 4375016, 5468770, 10937540, 21875080]

約数ペア:

[(1, 21875080), (2, 10937540), (4, 5468770), (5, 4375016), (8, 2734385), (10, 2187508), (19, 1151320), (20, 1093754), (38, 575660), (40, 546877), (76, 287830), (95, 230264), (107, 204440), (152, 143915), (190, 115132), (214, 102220), (269, 81320), (380, 57566), (428, 51110), (535, 40888), (538, 40660), (760, 28783), (856, 25555), (1070, 20444), (1076, 20330), (1345, 16264), (2033, 10760), (2140, 10222), (2152, 10165), (2690, 8132), (4066, 5380), (4280, 5111)]