128406964

素因数分解:

$2^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{23279}}^1$

素因数の和:23487

約数の個数: 24

約数和(自身を含む): 258128640

約数和(自身を除く): 129721676

約数列:

[1, 2, 4, 7, 14, 28, 197, 394, 788, 1379, 2758, 5516, 23279, 46558, 93116, 162953, 325906, 651812, 4585963, 9171926, 18343852, 32101741, 64203482, 128406964]

約数ペア:

[(1, 128406964), (2, 64203482), (4, 32101741), (7, 18343852), (14, 9171926), (28, 4585963), (197, 651812), (394, 325906), (788, 162953), (1379, 93116), (2758, 46558), (5516, 23279)]