21090152

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1559}}^1$

素因数の和:1673

約数の個数: 32

約数和(自身を含む): 42120000

約数和(自身を除く): 21029848

約数列:

[1, 2, 4, 8, 19, 38, 76, 89, 152, 178, 356, 712, 1559, 1691, 3118, 3382, 6236, 6764, 12472, 13528, 29621, 59242, 118484, 138751, 236968, 277502, 555004, 1110008, 2636269, 5272538, 10545076, 21090152]

約数ペア:

[(1, 21090152), (2, 10545076), (4, 5272538), (8, 2636269), (19, 1110008), (38, 555004), (76, 277502), (89, 236968), (152, 138751), (178, 118484), (356, 59242), (712, 29621), (1559, 13528), (1691, 12472), (3118, 6764), (3382, 6236)]