21781008

素因数分解:

$2^4\times 3^3\times {\mathrm{127}}^1\times {\mathrm{397}}^1$

素因数の和:541

約数の個数: 80

約数和(自身を含む): 63170560

約数和(自身を除く): 41389552

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 108, 127, 144, 216, 254, 381, 397, 432, 508, 762, 794, 1016, 1143, 1191, 1524, 1588, 2032, 2286, 2382, 3048, 3176, 3429, 3573, 4572, 4764, 6096, 6352, 6858, 7146, 9144, 9528, 10719, 13716, 14292, 18288, 19056, 21438, 27432, 28584, 42876, 50419, 54864, 57168, 85752, 100838, 151257, 171504, 201676, 302514, 403352, 453771, 605028, 806704, 907542, 1210056, 1361313, 1815084, 2420112, 2722626, 3630168, 5445252, 7260336, 10890504, 21781008]

約数ペア:

[(1, 21781008), (2, 10890504), (3, 7260336), (4, 5445252), (6, 3630168), (8, 2722626), (9, 2420112), (12, 1815084), (16, 1361313), (18, 1210056), (24, 907542), (27, 806704), (36, 605028), (48, 453771), (54, 403352), (72, 302514), (108, 201676), (127, 171504), (144, 151257), (216, 100838), (254, 85752), (381, 57168), (397, 54864), (432, 50419), (508, 42876), (762, 28584), (794, 27432), (1016, 21438), (1143, 19056), (1191, 18288), (1524, 14292), (1588, 13716), (2032, 10719), (2286, 9528), (2382, 9144), (3048, 7146), (3176, 6858), (3429, 6352), (3573, 6096), (4572, 4764)]