19682780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{75703}}^1$

素因数の和:75725

約数の個数: 24

約数和(自身を含む): 44513952

約数和(自身を除く): 24831172

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 75703, 151406, 302812, 378515, 757030, 984139, 1514060, 1968278, 3936556, 4920695, 9841390, 19682780]

約数ペア:

[(1, 19682780), (2, 9841390), (4, 4920695), (5, 3936556), (10, 1968278), (13, 1514060), (20, 984139), (26, 757030), (52, 378515), (65, 302812), (130, 151406), (260, 75703)]