28039700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{21569}}^1$

素因数の和:21596

約数の個数: 36

約数和(自身を含む): 65529660

約数和(自身を除く): 37489960

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 21569, 43138, 86276, 107845, 215690, 280397, 431380, 539225, 560794, 1078450, 1121588, 1401985, 2156900, 2803970, 5607940, 7009925, 14019850, 28039700]

約数ペア:

[(1, 28039700), (2, 14019850), (4, 7009925), (5, 5607940), (10, 2803970), (13, 2156900), (20, 1401985), (25, 1121588), (26, 1078450), (50, 560794), (52, 539225), (65, 431380), (100, 280397), (130, 215690), (260, 107845), (325, 86276), (650, 43138), (1300, 21569)]