19804278

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{253901}}^1$

素因数の和:253919

約数の個数: 16

約数和(自身を含む): 42655536

約数和(自身を除く): 22851258

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 253901, 507802, 761703, 1523406, 3300713, 6601426, 9902139, 19804278]

約数ペア:

[(1, 19804278), (2, 9902139), (3, 6601426), (6, 3300713), (13, 1523406), (26, 761703), (39, 507802), (78, 253901)]