18675404

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{251}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 38102400

約数和(自身を除く): 19426996

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 89, 178, 209, 251, 356, 418, 502, 836, 979, 1004, 1691, 1958, 2761, 3382, 3916, 4769, 5522, 6764, 9538, 11044, 18601, 19076, 22339, 37202, 44678, 52459, 74404, 89356, 104918, 209836, 245729, 424441, 491458, 848882, 982916, 1697764, 4668851, 9337702, 18675404]

約数ペア:

[(1, 18675404), (2, 9337702), (4, 4668851), (11, 1697764), (19, 982916), (22, 848882), (38, 491458), (44, 424441), (76, 245729), (89, 209836), (178, 104918), (209, 89356), (251, 74404), (356, 52459), (418, 44678), (502, 37202), (836, 22339), (979, 19076), (1004, 18601), (1691, 11044), (1958, 9538), (2761, 6764), (3382, 5522), (3916, 4769)]