128839280

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{16603}}^1$

素因数の和:16713

約数の個数: 40

約数和(自身を含む): 302657712

約数和(自身を除く): 173818432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 776, 970, 1552, 1940, 3880, 7760, 16603, 33206, 66412, 83015, 132824, 166030, 265648, 332060, 664120, 1328240, 1610491, 3220982, 6441964, 8052455, 12883928, 16104910, 25767856, 32209820, 64419640, 128839280]

約数ペア:

[(1, 128839280), (2, 64419640), (4, 32209820), (5, 25767856), (8, 16104910), (10, 12883928), (16, 8052455), (20, 6441964), (40, 3220982), (80, 1610491), (97, 1328240), (194, 664120), (388, 332060), (485, 265648), (776, 166030), (970, 132824), (1552, 83015), (1940, 66412), (3880, 33206), (7760, 16603)]