213681988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{173}}^1\times {\mathrm{23753}}^1$

素因数の和:23943

約数の個数: 24

約数和(自身を含む): 405053208

約数和(自身を除く): 191371220

約数列:

[1, 2, 4, 13, 26, 52, 173, 346, 692, 2249, 4498, 8996, 23753, 47506, 95012, 308789, 617578, 1235156, 4109269, 8218538, 16437076, 53420497, 106840994, 213681988]

約数ペア:

[(1, 213681988), (2, 106840994), (4, 53420497), (13, 16437076), (26, 8218538), (52, 4109269), (173, 1235156), (346, 617578), (692, 308789), (2249, 95012), (4498, 47506), (8996, 23753)]