128827640

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{33203}}^1$

素因数の和:33311

約数の個数: 32

約数和(自身を含む): 292859280

約数和(自身を除く): 164031640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 33203, 66406, 132812, 166015, 265624, 332030, 664060, 1328120, 3220691, 6441382, 12882764, 16103455, 25765528, 32206910, 64413820, 128827640]

約数ペア:

[(1, 128827640), (2, 64413820), (4, 32206910), (5, 25765528), (8, 16103455), (10, 12882764), (20, 6441382), (40, 3220691), (97, 1328120), (194, 664060), (388, 332030), (485, 265624), (776, 166015), (970, 132812), (1940, 66406), (3880, 33203)]