205640

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1$

素因数の和:161

約数の個数: 32

約数和(自身を含む): 476280

約数和(自身を除く): 270640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 97, 106, 194, 212, 265, 388, 424, 485, 530, 776, 970, 1060, 1940, 2120, 3880, 5141, 10282, 20564, 25705, 41128, 51410, 102820, 205640]

約数ペア:

[(1, 205640), (2, 102820), (4, 51410), (5, 41128), (8, 25705), (10, 20564), (20, 10282), (40, 5141), (53, 3880), (97, 2120), (106, 1940), (194, 1060), (212, 970), (265, 776), (388, 530), (424, 485)]