21891567280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{983}}^1\times {\mathrm{25307}}^1$

素因数の和:26314

約数の個数: 80

約数和(自身を含む): 55583656704

約数和(自身を除く): 33692089424

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 983, 1966, 3932, 4915, 7864, 9830, 10813, 15728, 19660, 21626, 25307, 39320, 43252, 50614, 54065, 78640, 86504, 101228, 108130, 126535, 173008, 202456, 216260, 253070, 278377, 404912, 432520, 506140, 556754, 865040, 1012280, 1113508, 1391885, 2024560, 2227016, 2783770, 4454032, 5567540, 11135080, 22270160, 24876781, 49753562, 99507124, 124383905, 199014248, 248767810, 273644591, 398028496, 497535620, 547289182, 995071240, 1094578364, 1368222955, 1990142480, 2189156728, 2736445910, 4378313456, 5472891820, 10945783640, 21891567280]

約数ペア:

[(1, 21891567280), (2, 10945783640), (4, 5472891820), (5, 4378313456), (8, 2736445910), (10, 2189156728), (11, 1990142480), (16, 1368222955), (20, 1094578364), (22, 995071240), (40, 547289182), (44, 497535620), (55, 398028496), (80, 273644591), (88, 248767810), (110, 199014248), (176, 124383905), (220, 99507124), (440, 49753562), (880, 24876781), (983, 22270160), (1966, 11135080), (3932, 5567540), (4915, 4454032), (7864, 2783770), (9830, 2227016), (10813, 2024560), (15728, 1391885), (19660, 1113508), (21626, 1012280), (25307, 865040), (39320, 556754), (43252, 506140), (50614, 432520), (54065, 404912), (78640, 278377), (86504, 253070), (101228, 216260), (108130, 202456), (126535, 173008)]