21881930

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{44657}}^1$

素因数の和:44678

約数の個数: 24

約数和(自身を含む): 45819108

約数和(自身を除く): 23937178

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 44657, 89314, 223285, 312599, 446570, 625198, 1562995, 2188193, 3125990, 4376386, 10940965, 21881930]

約数ペア:

[(1, 21881930), (2, 10940965), (5, 4376386), (7, 3125990), (10, 2188193), (14, 1562995), (35, 625198), (49, 446570), (70, 312599), (98, 223285), (245, 89314), (490, 44657)]