21902212

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{2971}}^1$

素因数の和:3091

約数の個数: 24

約数和(自身を含む): 40775840

約数和(自身を除く): 18873628

約数列:

[1, 2, 4, 19, 38, 76, 97, 194, 388, 1843, 2971, 3686, 5942, 7372, 11884, 56449, 112898, 225796, 288187, 576374, 1152748, 5475553, 10951106, 21902212]

約数ペア:

[(1, 21902212), (2, 10951106), (4, 5475553), (19, 1152748), (38, 576374), (76, 288187), (97, 225796), (194, 112898), (388, 56449), (1843, 11884), (2971, 7372), (3686, 5942)]