80880700

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{19727}}^1$

素因数の和:19782

約数の個数: 36

約数和(自身を含む): 179800992

約数和(自身を除く): 98920292

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 19727, 39454, 78908, 98635, 197270, 394540, 493175, 808807, 986350, 1617614, 1972700, 3235228, 4044035, 8088070, 16176140, 20220175, 40440350, 80880700]

約数ペア:

[(1, 80880700), (2, 40440350), (4, 20220175), (5, 16176140), (10, 8088070), (20, 4044035), (25, 3235228), (41, 1972700), (50, 1617614), (82, 986350), (100, 808807), (164, 493175), (205, 394540), (410, 197270), (820, 98635), (1025, 78908), (2050, 39454), (4100, 19727)]