20609908

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{277}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 42033600

約数和(自身を除く): 21423692

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 89, 178, 209, 277, 356, 418, 554, 836, 979, 1108, 1691, 1958, 3047, 3382, 3916, 5263, 6094, 6764, 10526, 12188, 18601, 21052, 24653, 37202, 49306, 57893, 74404, 98612, 115786, 231572, 271183, 468407, 542366, 936814, 1084732, 1873628, 5152477, 10304954, 20609908]

約数ペア:

[(1, 20609908), (2, 10304954), (4, 5152477), (11, 1873628), (19, 1084732), (22, 936814), (38, 542366), (44, 468407), (76, 271183), (89, 231572), (178, 115786), (209, 98612), (277, 74404), (356, 57893), (418, 49306), (554, 37202), (836, 24653), (979, 21052), (1108, 18601), (1691, 12188), (1958, 10526), (3047, 6764), (3382, 6094), (3916, 5263)]