20437384

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{491}}^1$

素因数の和:562

約数の個数: 48

約数和(自身を含む): 43187760

約数和(自身を除く): 22750376

約数列:

[1, 2, 4, 8, 11, 22, 43, 44, 86, 88, 121, 172, 242, 344, 473, 484, 491, 946, 968, 982, 1892, 1964, 3784, 3928, 5203, 5401, 10406, 10802, 20812, 21113, 21604, 41624, 42226, 43208, 59411, 84452, 118822, 168904, 232243, 237644, 464486, 475288, 928972, 1857944, 2554673, 5109346, 10218692, 20437384]

約数ペア:

[(1, 20437384), (2, 10218692), (4, 5109346), (8, 2554673), (11, 1857944), (22, 928972), (43, 475288), (44, 464486), (86, 237644), (88, 232243), (121, 168904), (172, 118822), (242, 84452), (344, 59411), (473, 43208), (484, 42226), (491, 41624), (946, 21604), (968, 21113), (982, 20812), (1892, 10802), (1964, 10406), (3784, 5401), (3928, 5203)]