20806064

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{769}}^1$

素因数の和:885

約数の個数: 40

約数和(自身を含む): 42966000

約数和(自身を除く): 22159936

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 89, 152, 178, 304, 356, 712, 769, 1424, 1538, 1691, 3076, 3382, 6152, 6764, 12304, 13528, 14611, 27056, 29222, 58444, 68441, 116888, 136882, 233776, 273764, 547528, 1095056, 1300379, 2600758, 5201516, 10403032, 20806064]

約数ペア:

[(1, 20806064), (2, 10403032), (4, 5201516), (8, 2600758), (16, 1300379), (19, 1095056), (38, 547528), (76, 273764), (89, 233776), (152, 136882), (178, 116888), (304, 68441), (356, 58444), (712, 29222), (769, 27056), (1424, 14611), (1538, 13528), (1691, 12304), (3076, 6764), (3382, 6152)]