19782553

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{223}}^1$

素因数の和:301

約数の個数: 32

約数和(自身を含む): 25804800

約数和(自身を除く): 6022247

約数列:

[1, 7, 19, 23, 29, 133, 161, 203, 223, 437, 551, 667, 1561, 3059, 3857, 4237, 4669, 5129, 6467, 12673, 29659, 35903, 45269, 88711, 97451, 122873, 148741, 682157, 860111, 1041187, 2826079, 19782553]

約数ペア:

[(1, 19782553), (7, 2826079), (19, 1041187), (23, 860111), (29, 682157), (133, 148741), (161, 122873), (203, 97451), (223, 88711), (437, 45269), (551, 35903), (667, 29659), (1561, 12673), (3059, 6467), (3857, 5129), (4237, 4669)]