20766928

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{839}}^1$

素因数の和:884

約数の個数: 80

約数和(自身を含む): 52496640

約数和(自身を除く): 31729712

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 17, 26, 28, 34, 52, 56, 68, 91, 104, 112, 119, 136, 182, 208, 221, 238, 272, 364, 442, 476, 728, 839, 884, 952, 1456, 1547, 1678, 1768, 1904, 3094, 3356, 3536, 5873, 6188, 6712, 10907, 11746, 12376, 13424, 14263, 21814, 23492, 24752, 28526, 43628, 46984, 57052, 76349, 87256, 93968, 99841, 114104, 152698, 174512, 185419, 199682, 228208, 305396, 370838, 399364, 610792, 741676, 798728, 1221584, 1297933, 1483352, 1597456, 2595866, 2966704, 5191732, 10383464, 20766928]

約数ペア:

[(1, 20766928), (2, 10383464), (4, 5191732), (7, 2966704), (8, 2595866), (13, 1597456), (14, 1483352), (16, 1297933), (17, 1221584), (26, 798728), (28, 741676), (34, 610792), (52, 399364), (56, 370838), (68, 305396), (91, 228208), (104, 199682), (112, 185419), (119, 174512), (136, 152698), (182, 114104), (208, 99841), (221, 93968), (238, 87256), (272, 76349), (364, 57052), (442, 46984), (476, 43628), (728, 28526), (839, 24752), (884, 23492), (952, 21814), (1456, 14263), (1547, 13424), (1678, 12376), (1768, 11746), (1904, 10907), (3094, 6712), (3356, 6188), (3536, 5873)]