21031214

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1$

素因数の和:336

約数の個数: 32

約数和(自身を含む): 34700160

約数和(自身を除く): 13668946

約数列:

[1, 2, 19, 38, 43, 61, 86, 122, 211, 422, 817, 1159, 1634, 2318, 2623, 4009, 5246, 8018, 9073, 12871, 18146, 25742, 49837, 99674, 172387, 244549, 344774, 489098, 553453, 1106906, 10515607, 21031214]

約数ペア:

[(1, 21031214), (2, 10515607), (19, 1106906), (38, 553453), (43, 489098), (61, 344774), (86, 244549), (122, 172387), (211, 99674), (422, 49837), (817, 25742), (1159, 18146), (1634, 12871), (2318, 9073), (2623, 8018), (4009, 5246)]