20684312

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:264

約数の個数: 64

約数和(自身を含む): 45360000

約数和(自身を除く): 24675688

約数列:

[1, 2, 4, 8, 11, 19, 22, 38, 44, 76, 88, 89, 139, 152, 178, 209, 278, 356, 418, 556, 712, 836, 979, 1112, 1529, 1672, 1691, 1958, 2641, 3058, 3382, 3916, 5282, 6116, 6764, 7832, 10564, 12232, 12371, 13528, 18601, 21128, 24742, 29051, 37202, 49484, 58102, 74404, 98968, 116204, 136081, 148808, 232408, 235049, 272162, 470098, 544324, 940196, 1088648, 1880392, 2585539, 5171078, 10342156, 20684312]

約数ペア:

[(1, 20684312), (2, 10342156), (4, 5171078), (8, 2585539), (11, 1880392), (19, 1088648), (22, 940196), (38, 544324), (44, 470098), (76, 272162), (88, 235049), (89, 232408), (139, 148808), (152, 136081), (178, 116204), (209, 98968), (278, 74404), (356, 58102), (418, 49484), (556, 37202), (712, 29051), (836, 24742), (979, 21128), (1112, 18601), (1529, 13528), (1672, 12371), (1691, 12232), (1958, 10564), (2641, 7832), (3058, 6764), (3382, 6116), (3916, 5282)]