19486808

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{491}}^1$

素因数の和:560

約数の個数: 48

約数和(自身を含む): 41224680

約数和(自身を除く): 21737872

約数列:

[1, 2, 4, 8, 11, 22, 41, 44, 82, 88, 121, 164, 242, 328, 451, 484, 491, 902, 968, 982, 1804, 1964, 3608, 3928, 4961, 5401, 9922, 10802, 19844, 20131, 21604, 39688, 40262, 43208, 59411, 80524, 118822, 161048, 221441, 237644, 442882, 475288, 885764, 1771528, 2435851, 4871702, 9743404, 19486808]

約数ペア:

[(1, 19486808), (2, 9743404), (4, 4871702), (8, 2435851), (11, 1771528), (22, 885764), (41, 475288), (44, 442882), (82, 237644), (88, 221441), (121, 161048), (164, 118822), (242, 80524), (328, 59411), (451, 43208), (484, 40262), (491, 39688), (902, 21604), (968, 20131), (982, 19844), (1804, 10802), (1964, 9922), (3608, 5401), (3928, 4961)]