81781196

素因数分解:

$2^2\times 7^2\times {\mathrm{417251}}^1$

素因数の和:417269

約数の個数: 18

約数和(自身を含む): 166483548

約数和(自身を除く): 84702352

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 417251, 834502, 1669004, 2920757, 5841514, 11683028, 20445299, 40890598, 81781196]

約数ペア:

[(1, 81781196), (2, 40890598), (4, 20445299), (7, 11683028), (14, 5841514), (28, 2920757), (49, 1669004), (98, 834502), (196, 417251)]