19842620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{523}}^1$

素因数の和:810

約数の個数: 48

約数和(自身を含む): 47889408

約数和(自身を除く): 28046788

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 271, 523, 542, 1046, 1084, 1355, 1897, 2092, 2615, 2710, 3661, 3794, 5230, 5420, 7322, 7588, 9485, 10460, 14644, 18305, 18970, 36610, 37940, 73220, 141733, 283466, 566932, 708665, 992131, 1417330, 1984262, 2834660, 3968524, 4960655, 9921310, 19842620]

約数ペア:

[(1, 19842620), (2, 9921310), (4, 4960655), (5, 3968524), (7, 2834660), (10, 1984262), (14, 1417330), (20, 992131), (28, 708665), (35, 566932), (70, 283466), (140, 141733), (271, 73220), (523, 37940), (542, 36610), (1046, 18970), (1084, 18305), (1355, 14644), (1897, 10460), (2092, 9485), (2615, 7588), (2710, 7322), (3661, 5420), (3794, 5230)]