21318152

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{1009}}^1$

素因数の和:1173

約数の個数: 32

約数和(自身を含む): 42420000

約数和(自身を除く): 21101848

約数列:

[1, 2, 4, 8, 19, 38, 76, 139, 152, 278, 556, 1009, 1112, 2018, 2641, 4036, 5282, 8072, 10564, 19171, 21128, 38342, 76684, 140251, 153368, 280502, 561004, 1122008, 2664769, 5329538, 10659076, 21318152]

約数ペア:

[(1, 21318152), (2, 10659076), (4, 5329538), (8, 2664769), (19, 1122008), (38, 561004), (76, 280502), (139, 153368), (152, 140251), (278, 76684), (556, 38342), (1009, 21128), (1112, 19171), (2018, 10564), (2641, 8072), (4036, 5282)]