217796816

素因数分解:

$2^4\times {\mathrm{97}}^1\times {\mathrm{140333}}^1$

素因数の和:140438

約数の個数: 20

約数和(自身を含む): 426334692

約数和(自身を除く): 208537876

約数列:

[1, 2, 4, 8, 16, 97, 194, 388, 776, 1552, 140333, 280666, 561332, 1122664, 2245328, 13612301, 27224602, 54449204, 108898408, 217796816]

約数ペア:

[(1, 217796816), (2, 108898408), (4, 54449204), (8, 27224602), (16, 13612301), (97, 2245328), (194, 1122664), (388, 561332), (776, 280666), (1552, 140333)]